diff --git a/src/applications/base/PhabricatorApplication.php b/src/applications/base/PhabricatorApplication.php
index 4fc3e10314..0ed4917800 100644
--- a/src/applications/base/PhabricatorApplication.php
+++ b/src/applications/base/PhabricatorApplication.php
@@ -1,653 +1,654 @@
 <?php
 
 /**
  * @task  info  Application Information
  * @task  ui    UI Integration
  * @task  uri   URI Routing
  * @task  mail  Email integration
  * @task  fact  Fact Integration
  * @task  meta  Application Management
  */
 abstract class PhabricatorApplication
   extends Phobject
   implements PhabricatorPolicyInterface {
 
   const MAX_STATUS_ITEMS      = 100;
 
   const GROUP_CORE            = 'core';
   const GROUP_UTILITIES       = 'util';
   const GROUP_ADMIN           = 'admin';
   const GROUP_DEVELOPER       = 'developer';
 
   final public static function getApplicationGroups() {
     return array(
       self::GROUP_CORE          => pht('Core Applications'),
       self::GROUP_UTILITIES     => pht('Utilities'),
       self::GROUP_ADMIN         => pht('Administration'),
       self::GROUP_DEVELOPER     => pht('Developer Tools'),
     );
   }
 
 
 /* -(  Application Information  )-------------------------------------------- */
 
   abstract public function getName();
 
   public function getShortDescription() {
     return pht('%s Application', $this->getName());
   }
 
   final public function isInstalled() {
     if (!$this->canUninstall()) {
       return true;
     }
 
     $prototypes = PhabricatorEnv::getEnvConfig('phabricator.show-prototypes');
     if (!$prototypes && $this->isPrototype()) {
       return false;
     }
 
     $uninstalled = PhabricatorEnv::getEnvConfig(
       'phabricator.uninstalled-applications');
 
     return empty($uninstalled[get_class($this)]);
   }
 
 
   public function isPrototype() {
     return false;
   }
 
 
   /**
    * Return `true` if this application should never appear in application lists
    * in the UI. Primarily intended for unit test applications or other
    * pseudo-applications.
    *
    * Few applications should be unlisted. For most applications, use
    * @{method:isLaunchable} to hide them from main launch views instead.
    *
    * @return bool True to remove application from UI lists.
    */
   public function isUnlisted() {
     return false;
   }
 
 
   /**
    * Return `true` if this application is a normal application with a base
    * URI and a web interface.
    *
    * Launchable applications can be pinned to the home page, and show up in the
    * "Launcher" view of the Applications application. Making an application
    * unlauncahble prevents pinning and hides it from this view.
    *
    * Usually, an application should be marked unlaunchable if:
    *
    *   - it is available on every page anyway (like search); or
    *   - it does not have a web interface (like subscriptions); or
    *   - it is still pre-release and being intentionally buried.
    *
    * To hide applications more completely, use @{method:isUnlisted}.
    *
    * @return bool True if the application is launchable.
    */
   public function isLaunchable() {
     return true;
   }
 
 
   /**
    * Return `true` if this application should be pinned by default.
    *
    * Users who have not yet set preferences see a default list of applications.
    *
    * @param PhabricatorUser User viewing the pinned application list.
    * @return bool True if this application should be pinned by default.
    */
   public function isPinnedByDefault(PhabricatorUser $viewer) {
     return false;
   }
 
 
   /**
    * Returns true if an application is first-party (developed by Phacility)
    * and false otherwise.
    *
    * @return bool True if this application is developed by Phacility.
    */
   final public function isFirstParty() {
     $where = id(new ReflectionClass($this))->getFileName();
     $root = phutil_get_library_root('phabricator');
 
     if (!Filesystem::isDescendant($where, $root)) {
       return false;
     }
 
     if (Filesystem::isDescendant($where, $root.'/extensions')) {
       return false;
     }
 
     return true;
   }
 
   public function canUninstall() {
     return true;
   }
 
   final public function getPHID() {
     return 'PHID-APPS-'.get_class($this);
   }
 
   public function getTypeaheadURI() {
     return $this->isLaunchable() ? $this->getBaseURI() : null;
   }
 
   public function getBaseURI() {
     return null;
   }
 
   final public function getApplicationURI($path = '') {
     return $this->getBaseURI().ltrim($path, '/');
   }
 
   public function getIconURI() {
     return null;
   }
 
   public function getFontIcon() {
     return 'fa-puzzle-piece';
   }
 
   public function getApplicationOrder() {
     return PHP_INT_MAX;
   }
 
   public function getApplicationGroup() {
     return self::GROUP_CORE;
   }
 
   public function getTitleGlyph() {
     return null;
   }
 
   final public function getHelpMenuItems(PhabricatorUser $viewer) {
     $items = array();
 
     $articles = $this->getHelpDocumentationArticles($viewer);
     if ($articles) {
       $items[] = id(new PHUIListItemView())
         ->setType(PHUIListItemView::TYPE_LABEL)
         ->setName(pht('%s Documentation', $this->getName()));
       foreach ($articles as $article) {
         $item = id(new PHUIListItemView())
           ->setName($article['name'])
           ->setIcon('fa-book')
           ->setHref($article['href']);
 
         $items[] = $item;
       }
     }
 
     $command_specs = $this->getMailCommandObjects();
     if ($command_specs) {
       $items[] = id(new PHUIListItemView())
         ->setType(PHUIListItemView::TYPE_LABEL)
         ->setName(pht('Email Help'));
       foreach ($command_specs as $key => $spec) {
         $object = $spec['object'];
 
         $class = get_class($this);
         $href = '/applications/mailcommands/'.$class.'/'.$key.'/';
 
         $item = id(new PHUIListItemView())
           ->setName($spec['name'])
           ->setIcon('fa-envelope-o')
           ->setHref($href);
         $items[] = $item;
       }
     }
 
     return $items;
   }
 
   public function getHelpDocumentationArticles(PhabricatorUser $viewer) {
     return array();
   }
 
   public function getOverview() {
     return null;
   }
 
   public function getEventListeners() {
     return array();
   }
 
   public function getRemarkupRules() {
     return array();
   }
 
   public function getQuicksandURIPatternBlacklist() {
     return array();
   }
 
   public function getMailCommandObjects() {
     return array();
   }
 
 
 /* -(  URI Routing  )-------------------------------------------------------- */
 
 
   public function getRoutes() {
     return array();
   }
 
   public function getResourceRoutes() {
     return array();
   }
 
 
 /* -(  Email Integration  )-------------------------------------------------- */
 
 
   public function supportsEmailIntegration() {
     return false;
   }
 
   final protected function getInboundEmailSupportLink() {
     return PhabricatorEnv::getDocLink('Configuring Inbound Email');
   }
 
   public function getAppEmailBlurb() {
     throw new PhutilMethodNotImplementedException();
   }
 
 
 /* -(  Fact Integration  )--------------------------------------------------- */
 
 
   public function getFactObjectsForAnalysis() {
     return array();
   }
 
 
 /* -(  UI Integration  )----------------------------------------------------- */
 
 
   /**
    * Render status elements (like "3 Waiting Reviews") for application list
    * views. These provide a way to alert users to new or pending action items
    * in applications.
    *
    * @param PhabricatorUser Viewing user.
    * @return list<PhabricatorApplicationStatusView> Application status elements.
    * @task ui
    */
   public function loadStatus(PhabricatorUser $user) {
     return array();
   }
 
 
   /**
    * You can provide an optional piece of flavor text for the application. This
    * is currently rendered in application launch views if the application has no
    * status elements.
    *
    * @return string|null Flavor text.
    * @task ui
    */
   public function getFlavorText() {
     return null;
   }
 
 
   /**
    * Build items for the main menu.
    *
    * @param  PhabricatorUser    The viewing user.
    * @param  AphrontController  The current controller. May be null for special
    *                            pages like 404, exception handlers, etc.
    * @return list<PHUIListItemView> List of menu items.
    * @task ui
    */
   public function buildMainMenuItems(
     PhabricatorUser $user,
     PhabricatorController $controller = null) {
     return array();
   }
 
 
   /**
    * Build extra items for the main menu. Generally, this is used to render
    * static dropdowns.
    *
    * @param  PhabricatorUser    The viewing user.
    * @param  AphrontController  The current controller. May be null for special
    *                            pages like 404, exception handlers, etc.
    * @return view               List of menu items.
    * @task ui
    */
   public function buildMainMenuExtraNodes(
     PhabricatorUser $viewer,
     PhabricatorController $controller = null) {
     return array();
   }
 
 
   /**
    * Build items for the "quick create" menu.
    *
    * @param   PhabricatorUser         The viewing user.
    * @return  list<PHUIListItemView>  List of menu items.
    */
   public function getQuickCreateItems(PhabricatorUser $viewer) {
     return array();
   }
 
 
 /* -(  Application Management  )--------------------------------------------- */
 
 
   final public static function getByClass($class_name) {
     $selected = null;
     $applications = self::getAllApplications();
 
     foreach ($applications as $application) {
       if (get_class($application) == $class_name) {
         $selected = $application;
         break;
       }
     }
 
     if (!$selected) {
       throw new Exception(pht("No application '%s'!", $class_name));
     }
 
     return $selected;
   }
 
   final public static function getAllApplications() {
     static $applications;
 
     if ($applications === null) {
       $apps = id(new PhutilClassMapQuery())
         ->setAncestorClass(__CLASS__)
         ->setSortMethod('getApplicationOrder')
         ->execute();
 
       // Reorder the applications into "application order". Notably, this
       // ensures their event handlers register in application order.
       $apps = mgroup($apps, 'getApplicationGroup');
 
       $group_order = array_keys(self::getApplicationGroups());
       $apps = array_select_keys($apps, $group_order) + $apps;
 
       $apps = array_mergev($apps);
 
       $applications = $apps;
     }
 
     return $applications;
   }
 
   final public static function getAllInstalledApplications() {
     $all_applications = self::getAllApplications();
     $apps = array();
     foreach ($all_applications as $app) {
       if (!$app->isInstalled()) {
         continue;
       }
 
       $apps[] = $app;
     }
 
     return $apps;
   }
 
 
   /**
    * Determine if an application is installed, by application class name.
    *
    * To check if an application is installed //and// available to a particular
    * viewer, user @{method:isClassInstalledForViewer}.
    *
    * @param string  Application class name.
    * @return bool   True if the class is installed.
    * @task meta
    */
   final public static function isClassInstalled($class) {
     return self::getByClass($class)->isInstalled();
   }
 
 
   /**
    * Determine if an application is installed and available to a viewer, by
    * application class name.
    *
    * To check if an application is installed at all, use
    * @{method:isClassInstalled}.
    *
    * @param string Application class name.
    * @param PhabricatorUser Viewing user.
    * @return bool True if the class is installed for the viewer.
    * @task meta
    */
   final public static function isClassInstalledForViewer(
     $class,
     PhabricatorUser $viewer) {
 
     if ($viewer->isOmnipotent()) {
       return true;
     }
 
     $cache = PhabricatorCaches::getRequestCache();
     $viewer_phid = $viewer->getPHID();
     $key = 'app.'.$class.'.installed.'.$viewer_phid;
 
     $result = $cache->getKey($key);
     if ($result === null) {
       if (!self::isClassInstalled($class)) {
         $result = false;
       } else {
         $result = PhabricatorPolicyFilter::hasCapability(
           $viewer,
           self::getByClass($class),
           PhabricatorPolicyCapability::CAN_VIEW);
       }
 
       $cache->setKey($key, $result);
     }
 
     return $result;
   }
 
 
 /* -(  PhabricatorPolicyInterface  )----------------------------------------- */
 
 
   public function getCapabilities() {
     return array_merge(
       array(
         PhabricatorPolicyCapability::CAN_VIEW,
         PhabricatorPolicyCapability::CAN_EDIT,
       ),
       array_keys($this->getCustomCapabilities()));
   }
 
   public function getPolicy($capability) {
     $default = $this->getCustomPolicySetting($capability);
     if ($default) {
       return $default;
     }
 
     switch ($capability) {
       case PhabricatorPolicyCapability::CAN_VIEW:
         return PhabricatorPolicies::getMostOpenPolicy();
       case PhabricatorPolicyCapability::CAN_EDIT:
         return PhabricatorPolicies::POLICY_ADMIN;
       default:
         $spec = $this->getCustomCapabilitySpecification($capability);
         return idx($spec, 'default', PhabricatorPolicies::POLICY_USER);
     }
   }
 
   public function hasAutomaticCapability($capability, PhabricatorUser $viewer) {
     return false;
   }
 
   public function describeAutomaticCapability($capability) {
     return null;
   }
 
 
 /* -(  Policies  )----------------------------------------------------------- */
 
   protected function getCustomCapabilities() {
     return array();
   }
 
   final private function getCustomPolicySetting($capability) {
     if (!$this->isCapabilityEditable($capability)) {
       return null;
     }
 
     $policy_locked = PhabricatorEnv::getEnvConfig('policy.locked');
     if (isset($policy_locked[$capability])) {
       return $policy_locked[$capability];
     }
 
     $config = PhabricatorEnv::getEnvConfig('phabricator.application-settings');
 
     $app = idx($config, $this->getPHID());
     if (!$app) {
       return null;
     }
 
     $policy = idx($app, 'policy');
     if (!$policy) {
       return null;
     }
 
     return idx($policy, $capability);
   }
 
 
   final private function getCustomCapabilitySpecification($capability) {
     $custom = $this->getCustomCapabilities();
     if (!isset($custom[$capability])) {
       throw new Exception(pht("Unknown capability '%s'!", $capability));
     }
     return $custom[$capability];
   }
 
   final public function getCapabilityLabel($capability) {
     switch ($capability) {
       case PhabricatorPolicyCapability::CAN_VIEW:
         return pht('Can Use Application');
       case PhabricatorPolicyCapability::CAN_EDIT:
         return pht('Can Configure Application');
     }
 
     $capobj = PhabricatorPolicyCapability::getCapabilityByKey($capability);
     if ($capobj) {
       return $capobj->getCapabilityName();
     }
 
     return null;
   }
 
   final public function isCapabilityEditable($capability) {
     switch ($capability) {
       case PhabricatorPolicyCapability::CAN_VIEW:
         return $this->canUninstall();
       case PhabricatorPolicyCapability::CAN_EDIT:
         return false;
       default:
         $spec = $this->getCustomCapabilitySpecification($capability);
         return idx($spec, 'edit', true);
     }
   }
 
   final public function getCapabilityCaption($capability) {
     switch ($capability) {
       case PhabricatorPolicyCapability::CAN_VIEW:
         if (!$this->canUninstall()) {
           return pht(
             'This application is required for Phabricator to operate, so all '.
             'users must have access to it.');
         } else {
           return null;
         }
       case PhabricatorPolicyCapability::CAN_EDIT:
         return null;
       default:
         $spec = $this->getCustomCapabilitySpecification($capability);
         return idx($spec, 'caption');
     }
   }
 
   final public function getCapabilityTemplatePHIDType($capability) {
     switch ($capability) {
       case PhabricatorPolicyCapability::CAN_VIEW:
       case PhabricatorPolicyCapability::CAN_EDIT:
         return null;
     }
 
     $spec = $this->getCustomCapabilitySpecification($capability);
     return idx($spec, 'template');
   }
 
   final public function getDefaultObjectTypePolicyMap() {
     $map = array();
 
     foreach ($this->getCustomCapabilities() as $capability => $spec) {
       if (empty($spec['template'])) {
         continue;
       }
       if (empty($spec['capability'])) {
         continue;
       }
       $default = $this->getPolicy($capability);
       $map[$spec['template']][$spec['capability']] = $default;
     }
 
     return $map;
   }
 
   public function getApplicationSearchDocumentTypes() {
     return array();
   }
 
   protected function getEditRoutePattern($base = null) {
     return $base.'(?:'.
       '(?P<id>[0-9]\d*)/)?'.
       '(?:'.
         '(?:'.
           '(?P<editAction>parameters|nodefault|nocreate|nomanage|comment)'.
           '|'.
           '(?:form/(?P<formKey>[^/]+))'.
         ')'.
       '/)?';
   }
 
   protected function getQueryRoutePattern($base = null) {
     return $base.'(?:query/(?P<queryKey>[^/]+)/)?';
   }
 
   protected function getPanelRouting($controller) {
     $edit_route = $this->getEditRoutePattern();
 
     return array(
       '(?P<panelAction>view)/(?P<panelID>[^/]+)/' => $controller,
       '(?P<panelAction>hide)/(?P<panelID>[^/]+)/' => $controller,
+      '(?P<panelAction>default)/(?P<panelID>[^/]+)/' => $controller,
       '(?P<panelAction>configure)/' => $controller,
       '(?P<panelAction>reorder)/' => $controller,
       '(?P<panelAction>edit)/'.$edit_route => $controller,
       '(?P<panelAction>new)/(?<panelKey>[^/]+)/'.$edit_route => $controller,
       '(?P<panelAction>builtin)/(?<panelID>[^/]+)/'.$edit_route
         => $controller,
     );
   }
 
 }
diff --git a/src/applications/project/controller/PhabricatorProjectBoardViewController.php b/src/applications/project/controller/PhabricatorProjectBoardViewController.php
index 571d5b866d..1b2d9d65e2 100644
--- a/src/applications/project/controller/PhabricatorProjectBoardViewController.php
+++ b/src/applications/project/controller/PhabricatorProjectBoardViewController.php
@@ -1,789 +1,788 @@
 <?php
 
 final class PhabricatorProjectBoardViewController
   extends PhabricatorProjectBoardController {
 
   const BATCH_EDIT_ALL = 'all';
 
   private $id;
   private $slug;
   private $handles;
   private $queryKey;
   private $filter;
   private $sortKey;
   private $showHidden;
 
   public function shouldAllowPublic() {
     return true;
   }
 
   public function handleRequest(AphrontRequest $request) {
     $viewer = $request->getUser();
     $id = $request->getURIData('id');
 
     $show_hidden = $request->getBool('hidden');
     $this->showHidden = $show_hidden;
 
     $project = id(new PhabricatorProjectQuery())
       ->setViewer($viewer)
       ->needImages(true);
     $id = $request->getURIData('id');
     $slug = $request->getURIData('slug');
     if ($slug) {
       $project->withSlugs(array($slug));
     } else {
       $project->withIDs(array($id));
     }
     $project = $project->executeOne();
     if (!$project) {
       return new Aphront404Response();
     }
 
     $this->setProject($project);
     $this->id = $project->getID();
 
     $sort_key = $request->getStr('order');
     switch ($sort_key) {
       case PhabricatorProjectColumn::ORDER_NATURAL:
       case PhabricatorProjectColumn::ORDER_PRIORITY:
         break;
       default:
         $sort_key = PhabricatorProjectColumn::DEFAULT_ORDER;
         break;
     }
     $this->sortKey = $sort_key;
 
     $column_query = id(new PhabricatorProjectColumnQuery())
       ->setViewer($viewer)
       ->withProjectPHIDs(array($project->getPHID()));
     if (!$show_hidden) {
       $column_query->withStatuses(
         array(PhabricatorProjectColumn::STATUS_ACTIVE));
     }
 
     $columns = $column_query->execute();
     $columns = mpull($columns, null, 'getSequence');
 
     // TODO: Expand the checks here if we add the ability
     // to hide the Backlog column
     if (!$columns) {
       $can_edit = PhabricatorPolicyFilter::hasCapability(
         $viewer,
         $project,
         PhabricatorPolicyCapability::CAN_EDIT);
       if (!$can_edit) {
         return $this->noAccessDialog($project);
       }
       switch ($request->getStr('initialize-type')) {
         case 'backlog-only':
           $unguarded = AphrontWriteGuard::beginScopedUnguardedWrites();
             $column = PhabricatorProjectColumn::initializeNewColumn($viewer)
               ->setSequence(0)
               ->setProperty('isDefault', true)
               ->setProjectPHID($project->getPHID())
               ->save();
             $column->attachProject($project);
             $columns[0] = $column;
           unset($unguarded);
           break;
         case 'import':
           return id(new AphrontRedirectResponse())
             ->setURI(
               $this->getApplicationURI('board/'.$project->getID().'/import/'));
           break;
         default:
           return $this->initializeWorkboardDialog($project);
           break;
       }
     }
 
     ksort($columns);
 
     $board_uri = $this->getApplicationURI('board/'.$project->getID().'/');
 
     $engine = id(new ManiphestTaskSearchEngine())
       ->setViewer($viewer)
       ->setBaseURI($board_uri)
       ->setIsBoardView(true);
 
     if ($request->isFormPost()) {
       $saved = $engine->buildSavedQueryFromRequest($request);
       $engine->saveQuery($saved);
       $filter_form = id(new AphrontFormView())
         ->setUser($viewer);
       $engine->buildSearchForm($filter_form, $saved);
       if ($engine->getErrors()) {
         return $this->newDialog()
           ->setWidth(AphrontDialogView::WIDTH_FULL)
           ->setTitle(pht('Advanced Filter'))
           ->appendChild($filter_form->buildLayoutView())
           ->setErrors($engine->getErrors())
           ->setSubmitURI($board_uri)
           ->addSubmitButton(pht('Apply Filter'))
           ->addCancelButton($board_uri);
       }
       return id(new AphrontRedirectResponse())->setURI(
         $this->getURIWithState(
           $engine->getQueryResultsPageURI($saved->getQueryKey())));
     }
 
     $query_key = $request->getURIData('queryKey');
     if (!$query_key) {
       $query_key = 'open';
     }
     $this->queryKey = $query_key;
 
     $custom_query = null;
     if ($engine->isBuiltinQuery($query_key)) {
       $saved = $engine->buildSavedQueryFromBuiltin($query_key);
     } else {
       $saved = id(new PhabricatorSavedQueryQuery())
         ->setViewer($viewer)
         ->withQueryKeys(array($query_key))
         ->executeOne();
 
       if (!$saved) {
         return new Aphront404Response();
       }
 
       $custom_query = $saved;
     }
 
     if ($request->getURIData('filter')) {
       $filter_form = id(new AphrontFormView())
         ->setUser($viewer);
       $engine->buildSearchForm($filter_form, $saved);
 
       return $this->newDialog()
         ->setWidth(AphrontDialogView::WIDTH_FULL)
         ->setTitle(pht('Advanced Filter'))
         ->appendChild($filter_form->buildLayoutView())
         ->setSubmitURI($board_uri)
         ->addSubmitButton(pht('Apply Filter'))
         ->addCancelButton($board_uri);
     }
 
     $task_query = $engine->buildQueryFromSavedQuery($saved);
 
     $tasks = $task_query
       ->withEdgeLogicPHIDs(
         PhabricatorProjectObjectHasProjectEdgeType::EDGECONST,
         PhabricatorQueryConstraint::OPERATOR_AND,
         array($project->getPHID()))
       ->setOrder(ManiphestTaskQuery::ORDER_PRIORITY)
       ->setViewer($viewer)
       ->execute();
     $tasks = mpull($tasks, null, 'getPHID');
 
     if ($tasks) {
       $positions = id(new PhabricatorProjectColumnPositionQuery())
         ->setViewer($viewer)
         ->withObjectPHIDs(mpull($tasks, 'getPHID'))
         ->withColumns($columns)
         ->execute();
       $positions = mpull($positions, null, 'getObjectPHID');
     } else {
       $positions = array();
     }
 
     $task_map = array();
     foreach ($tasks as $task) {
       $task_phid = $task->getPHID();
       if (empty($positions[$task_phid])) {
         // This shouldn't normally be possible because we create positions on
         // demand, but we might have raced as an object was removed from the
         // board. Just drop the task if we don't have a position for it.
         continue;
       }
 
       $position = $positions[$task_phid];
       $task_map[$position->getColumnPHID()][] = $task_phid;
     }
 
     // If we're showing the board in "natural" order, sort columns by their
     // column positions.
     if ($this->sortKey == PhabricatorProjectColumn::ORDER_NATURAL) {
       foreach ($task_map as $column_phid => $task_phids) {
         $order = array();
         foreach ($task_phids as $task_phid) {
           if (isset($positions[$task_phid])) {
             $order[$task_phid] = $positions[$task_phid]->getOrderingKey();
           } else {
             $order[$task_phid] = 0;
           }
         }
         asort($order);
         $task_map[$column_phid] = array_keys($order);
       }
     }
 
     $task_can_edit_map = id(new PhabricatorPolicyFilter())
       ->setViewer($viewer)
       ->requireCapabilities(array(PhabricatorPolicyCapability::CAN_EDIT))
       ->apply($tasks);
 
     // If this is a batch edit, select the editable tasks in the chosen column
     // and ship the user into the batch editor.
     $batch_edit = $request->getStr('batch');
     if ($batch_edit) {
       if ($batch_edit !== self::BATCH_EDIT_ALL) {
         $column_id_map = mpull($columns, null, 'getID');
         $batch_column = idx($column_id_map, $batch_edit);
         if (!$batch_column) {
           return new Aphront404Response();
         }
 
         $batch_task_phids = idx($task_map, $batch_column->getPHID(), array());
         foreach ($batch_task_phids as $key => $batch_task_phid) {
           if (empty($task_can_edit_map[$batch_task_phid])) {
             unset($batch_task_phids[$key]);
           }
         }
 
         $batch_tasks = array_select_keys($tasks, $batch_task_phids);
       } else {
         $batch_tasks = $task_can_edit_map;
       }
 
       if (!$batch_tasks) {
         $cancel_uri = $this->getURIWithState($board_uri);
         return $this->newDialog()
           ->setTitle(pht('No Editable Tasks'))
           ->appendParagraph(
             pht(
               'The selected column contains no visible tasks which you '.
               'have permission to edit.'))
           ->addCancelButton($board_uri);
       }
 
       $batch_ids = mpull($batch_tasks, 'getID');
       $batch_ids = implode(',', $batch_ids);
 
       $batch_uri = new PhutilURI('/maniphest/batch/');
       $batch_uri->setQueryParam('board', $this->id);
       $batch_uri->setQueryParam('batch', $batch_ids);
       return id(new AphrontRedirectResponse())
         ->setURI($batch_uri);
     }
 
     $board_id = celerity_generate_unique_node_id();
 
     $board = id(new PHUIWorkboardView())
       ->setUser($viewer)
       ->setID($board_id);
 
     $behavior_config = array(
       'boardID' => $board_id,
       'projectPHID' => $project->getPHID(),
       'moveURI' => $this->getApplicationURI('move/'.$project->getID().'/'),
       'createURI' => $this->getCreateURI(),
       'order' => $this->sortKey,
     );
     $this->initBehavior(
       'project-boards',
       $behavior_config);
 
     $this->handles = ManiphestTaskListView::loadTaskHandles($viewer, $tasks);
 
     foreach ($columns as $column) {
       $task_phids = idx($task_map, $column->getPHID(), array());
       $column_tasks = array_select_keys($tasks, $task_phids);
 
       $panel = id(new PHUIWorkpanelView())
         ->setHeader($column->getDisplayName())
         ->setSubHeader($column->getDisplayType())
         ->addSigil('workpanel');
 
       $header_icon = $column->getHeaderIcon();
       if ($header_icon) {
         $panel->setHeaderIcon($header_icon);
       }
 
       if ($column->isHidden()) {
         $panel->addClass('project-panel-hidden');
       }
 
       $column_menu = $this->buildColumnMenu($project, $column);
       $panel->addHeaderAction($column_menu);
 
       $tag_id = celerity_generate_unique_node_id();
       $tag_content_id = celerity_generate_unique_node_id();
 
       $count_tag = id(new PHUITagView())
         ->setType(PHUITagView::TYPE_SHADE)
         ->setShade(PHUITagView::COLOR_BLUE)
         ->setID($tag_id)
         ->setName(phutil_tag('span', array('id' => $tag_content_id), '-'))
         ->setStyle('display: none');
 
       $panel->setHeaderTag($count_tag);
 
       $cards = id(new PHUIObjectItemListView())
         ->setUser($viewer)
         ->setFlush(true)
         ->setAllowEmptyList(true)
         ->addSigil('project-column')
         ->setMetadata(
           array(
             'columnPHID' => $column->getPHID(),
             'countTagID' => $tag_id,
             'countTagContentID' => $tag_content_id,
             'pointLimit' => $column->getPointLimit(),
           ));
 
       foreach ($column_tasks as $task) {
         $owner = null;
         if ($task->getOwnerPHID()) {
           $owner = $this->handles[$task->getOwnerPHID()];
         }
         $can_edit = idx($task_can_edit_map, $task->getPHID(), false);
         $cards->addItem(id(new ProjectBoardTaskCard())
           ->setViewer($viewer)
           ->setTask($task)
           ->setOwner($owner)
           ->setCanEdit($can_edit)
           ->getItem());
       }
       $panel->setCards($cards);
       $board->addPanel($panel);
     }
 
     $sort_menu = $this->buildSortMenu(
       $viewer,
       $sort_key);
 
     $filter_menu = $this->buildFilterMenu(
       $viewer,
       $custom_query,
       $engine,
       $query_key);
 
     $manage_menu = $this->buildManageMenu($project, $show_hidden);
 
     $header_link = phutil_tag(
       'a',
       array(
         'href' => $this->getApplicationURI('profile/'.$project->getID().'/'),
       ),
       $project->getName());
 
     $header = id(new PHUIHeaderView())
       ->setHeader($header_link)
       ->setUser($viewer)
       ->setNoBackground(true)
       ->addActionLink($sort_menu)
       ->addActionLink($filter_menu)
       ->addActionLink($manage_menu)
       ->setPolicyObject($project);
 
     $header_box = id(new PHUIBoxView())
       ->appendChild($header)
       ->addClass('project-board-header');
 
     $board_box = id(new PHUIBoxView())
       ->appendChild($board)
       ->addClass('project-board-wrapper');
 
     $nav = $this->getProfileMenu();
 
     return $this->newPage()
       ->setTitle(pht('%s Board', $project->getName()))
       ->setPageObjectPHIDs(array($project->getPHID()))
       ->setShowFooter(false)
       ->setNavigation($nav)
       ->addQuicksandConfig(
         array(
           'boardConfig' => $behavior_config,
         ))
       ->appendChild(
         array(
           $header_box,
           $board_box,
         ));
   }
 
   private function buildSortMenu(
     PhabricatorUser $viewer,
     $sort_key) {
 
     $sort_icon = id(new PHUIIconView())
       ->setIconFont('fa-sort-amount-asc bluegrey');
 
     $named = array(
       PhabricatorProjectColumn::ORDER_NATURAL => pht('Natural'),
       PhabricatorProjectColumn::ORDER_PRIORITY => pht('Sort by Priority'),
     );
 
     $base_uri = $this->getURIWithState();
 
     $items = array();
     foreach ($named as $key => $name) {
       $is_selected = ($key == $sort_key);
       if ($is_selected) {
         $active_order = $name;
       }
 
       $item = id(new PhabricatorActionView())
         ->setIcon('fa-sort-amount-asc')
         ->setSelected($is_selected)
         ->setName($name);
 
       $uri = $base_uri->alter('order', $key);
       $item->setHref($uri);
 
       $items[] = $item;
     }
 
     $sort_menu = id(new PhabricatorActionListView())
       ->setUser($viewer);
     foreach ($items as $item) {
       $sort_menu->addAction($item);
     }
 
     $sort_button = id(new PHUIButtonView())
       ->setText(pht('Sort: %s', $active_order))
       ->setIcon($sort_icon)
       ->setTag('a')
       ->setHref('#')
       ->addSigil('boards-dropdown-menu')
       ->setMetadata(
         array(
           'items' => hsprintf('%s', $sort_menu),
         ));
 
     return $sort_button;
   }
   private function buildFilterMenu(
     PhabricatorUser $viewer,
     $custom_query,
     PhabricatorApplicationSearchEngine $engine,
     $query_key) {
 
     $filter_icon = id(new PHUIIconView())
       ->setIconFont('fa-search-plus bluegrey');
 
     $named = array(
       'open' => pht('Open Tasks'),
       'all' => pht('All Tasks'),
     );
 
     if ($viewer->isLoggedIn()) {
       $named['assigned'] = pht('Assigned to Me');
     }
 
     if ($custom_query) {
       $named[$custom_query->getQueryKey()] = pht('Custom Filter');
     }
 
     $items = array();
     foreach ($named as $key => $name) {
       $is_selected = ($key == $query_key);
       if ($is_selected) {
         $active_filter = $name;
       }
 
       $is_custom = false;
       if ($custom_query) {
         $is_custom = ($key == $custom_query->getQueryKey());
       }
 
       $item = id(new PhabricatorActionView())
         ->setIcon('fa-search')
         ->setSelected($is_selected)
         ->setName($name);
 
       if ($is_custom) {
         $uri = $this->getApplicationURI(
           'board/'.$this->id.'/filter/query/'.$key.'/');
         $item->setWorkflow(true);
       } else {
         $uri = $engine->getQueryResultsPageURI($key);
       }
 
       $uri = $this->getURIWithState($uri);
       $item->setHref($uri);
 
       $items[] = $item;
     }
 
     $items[] = id(new PhabricatorActionView())
       ->setIcon('fa-cog')
       ->setHref($this->getApplicationURI('board/'.$this->id.'/filter/'))
       ->setWorkflow(true)
       ->setName(pht('Advanced Filter...'));
 
     $filter_menu = id(new PhabricatorActionListView())
         ->setUser($viewer);
     foreach ($items as $item) {
       $filter_menu->addAction($item);
     }
 
     $filter_button = id(new PHUIButtonView())
       ->setText(pht('Filter: %s', $active_filter))
       ->setIcon($filter_icon)
       ->setTag('a')
       ->setHref('#')
       ->addSigil('boards-dropdown-menu')
       ->setMetadata(
         array(
           'items' => hsprintf('%s', $filter_menu),
         ));
 
     return $filter_button;
   }
 
   private function buildManageMenu(
     PhabricatorProject $project,
     $show_hidden) {
 
     $request = $this->getRequest();
     $viewer = $request->getUser();
 
     $can_edit = PhabricatorPolicyFilter::hasCapability(
       $viewer,
       $project,
       PhabricatorPolicyCapability::CAN_EDIT);
 
     $manage_icon = id(new PHUIIconView())
       ->setIconFont('fa-cog bluegrey');
 
     $manage_items = array();
 
     $manage_items[] = id(new PhabricatorActionView())
       ->setIcon('fa-plus')
       ->setName(pht('Add Column'))
       ->setHref($this->getApplicationURI('board/'.$this->id.'/edit/'))
       ->setDisabled(!$can_edit)
       ->setWorkflow(!$can_edit);
 
     $manage_items[] = id(new PhabricatorActionView())
       ->setIcon('fa-exchange')
       ->setName(pht('Reorder Columns'))
       ->setHref($this->getApplicationURI('board/'.$this->id.'/reorder/'))
       ->setDisabled(!$can_edit)
       ->setWorkflow(true);
 
     if ($show_hidden) {
       $hidden_uri = $this->getURIWithState()
         ->setQueryParam('hidden', null);
       $hidden_icon = 'fa-eye-slash';
       $hidden_text = pht('Hide Hidden Columns');
     } else {
       $hidden_uri = $this->getURIWithState()
         ->setQueryParam('hidden', 'true');
       $hidden_icon = 'fa-eye';
       $hidden_text = pht('Show Hidden Columns');
     }
 
     $manage_items[] = id(new PhabricatorActionView())
       ->setIcon($hidden_icon)
       ->setName($hidden_text)
       ->setHref($hidden_uri);
 
     $batch_edit_uri = $request->getRequestURI();
     $batch_edit_uri->setQueryParam('batch', self::BATCH_EDIT_ALL);
     $can_batch_edit = PhabricatorPolicyFilter::hasCapability(
       $viewer,
       PhabricatorApplication::getByClass('PhabricatorManiphestApplication'),
       ManiphestBulkEditCapability::CAPABILITY);
 
     $manage_items[] = id(new PhabricatorActionView())
       ->setIcon('fa-list-ul')
       ->setName(pht('Batch Edit Visible Tasks...'))
       ->setHref($batch_edit_uri)
       ->setDisabled(!$can_batch_edit);
 
     $manage_menu = id(new PhabricatorActionListView())
         ->setUser($viewer);
     foreach ($manage_items as $item) {
       $manage_menu->addAction($item);
     }
 
     $manage_button = id(new PHUIButtonView())
       ->setText(pht('Manage Board'))
       ->setIcon($manage_icon)
       ->setTag('a')
       ->setHref('#')
       ->addSigil('boards-dropdown-menu')
       ->setMetadata(
         array(
           'items' => hsprintf('%s', $manage_menu),
         ));
 
     return $manage_button;
   }
 
   private function buildColumnMenu(
     PhabricatorProject $project,
     PhabricatorProjectColumn $column) {
 
     $request = $this->getRequest();
     $viewer = $request->getUser();
 
     $can_edit = PhabricatorPolicyFilter::hasCapability(
       $viewer,
       $project,
       PhabricatorPolicyCapability::CAN_EDIT);
 
     $column_items = array();
 
     $column_items[] = id(new PhabricatorActionView())
       ->setIcon('fa-plus')
       ->setName(pht('Create Task...'))
       ->setHref($this->getCreateURI())
       ->addSigil('column-add-task')
       ->setMetadata(
         array(
           'columnPHID' => $column->getPHID(),
         ));
 
     $batch_edit_uri = $request->getRequestURI();
     $batch_edit_uri->setQueryParam('batch', $column->getID());
     $can_batch_edit = PhabricatorPolicyFilter::hasCapability(
       $viewer,
       PhabricatorApplication::getByClass('PhabricatorManiphestApplication'),
       ManiphestBulkEditCapability::CAPABILITY);
 
     $column_items[] = id(new PhabricatorActionView())
       ->setIcon('fa-list-ul')
       ->setName(pht('Batch Edit Tasks...'))
       ->setHref($batch_edit_uri)
       ->setDisabled(!$can_batch_edit);
 
     $detail_uri = $this->getApplicationURI(
       'board/'.$this->id.'/column/'.$column->getID().'/');
 
     $column_items[] = id(new PhabricatorActionView())
       ->setIcon('fa-columns')
       ->setName(pht('Column Details'))
       ->setHref($detail_uri);
 
     $can_hide = ($can_edit && !$column->isDefaultColumn());
     $hide_uri = 'board/'.$this->id.'/hide/'.$column->getID().'/';
     $hide_uri = $this->getApplicationURI($hide_uri);
     $hide_uri = $this->getURIWithState($hide_uri);
 
     if (!$column->isHidden()) {
       $column_items[] = id(new PhabricatorActionView())
         ->setName(pht('Hide Column'))
         ->setIcon('fa-eye-slash')
         ->setHref($hide_uri)
         ->setDisabled(!$can_hide)
         ->setWorkflow(true);
     } else {
       $column_items[] = id(new PhabricatorActionView())
         ->setName(pht('Show Column'))
         ->setIcon('fa-eye')
         ->setHref($hide_uri)
         ->setDisabled(!$can_hide)
         ->setWorkflow(true);
     }
 
     $column_menu = id(new PhabricatorActionListView())
       ->setUser($viewer);
     foreach ($column_items as $item) {
       $column_menu->addAction($item);
     }
 
     $column_button = id(new PHUIIconView())
       ->setIconFont('fa-caret-down')
       ->setHref('#')
       ->addSigil('boards-dropdown-menu')
       ->setMetadata(
         array(
           'items' => hsprintf('%s', $column_menu),
         ));
 
     return $column_button;
   }
 
   private function initializeWorkboardDialog(PhabricatorProject $project) {
 
     $instructions = pht('This workboard has not been setup yet.');
     $new_selector = id(new AphrontFormRadioButtonControl())
       ->setName('initialize-type')
       ->setValue('backlog-only')
       ->addButton(
         'backlog-only',
         pht('New Empty Board'),
         pht('Create a new board with just a backlog column.'))
       ->addButton(
         'import',
         pht('Import Columns'),
         pht('Import board columns from another project.'));
 
-    $dialog = id(new AphrontDialogView())
-      ->setUser($this->getRequest()->getUser())
+
+    $cancel_uri = $this->getApplicationURI('profile/'.$project->getID().'/');
+
+    return $this->newDialog()
       ->setTitle(pht('New Workboard'))
       ->addSubmitButton('Continue')
-      ->addCancelButton($this->getApplicationURI('view/'.$project->getID().'/'))
+      ->addCancelButton($cancel_uri)
       ->appendParagraph($instructions)
       ->appendChild($new_selector);
-
-    return id(new AphrontDialogResponse())
-      ->setDialog($dialog);
   }
 
   private function noAccessDialog(PhabricatorProject $project) {
 
     $instructions = pht('This workboard has not been setup yet.');
 
     $dialog = id(new AphrontDialogView())
       ->setUser($this->getRequest()->getUser())
       ->setTitle(pht('No Workboard'))
       ->addCancelButton($this->getApplicationURI('view/'.$project->getID().'/'))
       ->appendParagraph($instructions);
 
     return id(new AphrontDialogResponse())
       ->setDialog($dialog);
   }
 
 
   /**
    * Add current state parameters (like order and the visibility of hidden
    * columns) to a URI.
    *
    * This allows actions which toggle or adjust one piece of state to keep
    * the rest of the board state persistent. If no URI is provided, this method
    * starts with the request URI.
    *
    * @param string|null   URI to add state parameters to.
    * @return PhutilURI    URI with state parameters.
    */
   private function getURIWithState($base = null) {
     if ($base === null) {
       $base = $this->getRequest()->getRequestURI();
     }
 
     $base = new PhutilURI($base);
 
     if ($this->sortKey != PhabricatorProjectColumn::DEFAULT_ORDER) {
       $base->setQueryParam('order', $this->sortKey);
     } else {
       $base->setQueryParam('order', null);
     }
 
     $base->setQueryParam('hidden', $this->showHidden ? 'true' : null);
 
     return $base;
   }
 
   private function getCreateURI() {
     $viewer = $this->getViewer();
 
     // TODO: This should be cleaned up, but maybe we're going to make options
     // for each column or board?
     $edit_config = id(new ManiphestEditEngine())
       ->setViewer($viewer)
       ->loadDefaultEditConfiguration();
     if ($edit_config) {
       $form_key = $edit_config->getIdentifier();
       $create_uri = "/maniphest/task/edit/form/{$form_key}/";
     } else {
       $create_uri = '/maniphest/task/edit/';
     }
 
     return $create_uri;
   }
 
 }
diff --git a/src/applications/project/controller/PhabricatorProjectViewController.php b/src/applications/project/controller/PhabricatorProjectViewController.php
index 087971878b..412565c056 100644
--- a/src/applications/project/controller/PhabricatorProjectViewController.php
+++ b/src/applications/project/controller/PhabricatorProjectViewController.php
@@ -1,43 +1,36 @@
 <?php
 
 final class PhabricatorProjectViewController
   extends PhabricatorProjectController {
 
   public function shouldAllowPublic() {
     return true;
   }
 
   public function handleRequest(AphrontRequest $request) {
     $request = $this->getRequest();
     $viewer = $request->getViewer();
 
     $response = $this->loadProject();
     if ($response) {
       return $response;
     }
     $project = $this->getProject();
 
-    $columns = id(new PhabricatorProjectColumnQuery())
-      ->setViewer($viewer)
-      ->withProjectPHIDs(array($project->getPHID()))
-      ->execute();
-    if ($columns) {
-      $controller = 'board';
-    } else {
-      $controller = 'profile';
-    }
+    $engine = $this->getProfilePanelEngine();
+    $default = $engine->getDefaultPanel();
 
-    switch ($controller) {
-      case 'board':
+    switch ($default->getBuiltinKey()) {
+      case PhabricatorProject::PANEL_WORKBOARD:
         $controller_object = new PhabricatorProjectBoardViewController();
         break;
-      case 'profile':
+      case PhabricatorProject::PANEL_PROFILE:
       default:
         $controller_object = new PhabricatorProjectProfileController();
         break;
     }
 
     return $this->delegateToController($controller_object);
   }
 
 }
diff --git a/src/applications/project/profilepanel/PhabricatorProjectDetailsProfilePanel.php b/src/applications/project/profilepanel/PhabricatorProjectDetailsProfilePanel.php
index 97ba3a1aaa..07e6ce4c10 100644
--- a/src/applications/project/profilepanel/PhabricatorProjectDetailsProfilePanel.php
+++ b/src/applications/project/profilepanel/PhabricatorProjectDetailsProfilePanel.php
@@ -1,59 +1,64 @@
 <?php
 
 final class PhabricatorProjectDetailsProfilePanel
   extends PhabricatorProfilePanel {
 
   const PANELKEY = 'project.details';
 
   public function getPanelTypeName() {
     return pht('Project Details');
   }
 
   private function getDefaultName() {
     return pht('Project Details');
   }
 
+  public function canMakeDefault(
+    PhabricatorProfilePanelConfiguration $config) {
+    return true;
+  }
+
   public function getDisplayName(
     PhabricatorProfilePanelConfiguration $config) {
     $name = $config->getPanelProperty('name');
 
     if (strlen($name)) {
       return $name;
     }
 
     return $this->getDefaultName();
   }
 
   public function buildEditEngineFields(
     PhabricatorProfilePanelConfiguration $config) {
     return array(
       id(new PhabricatorTextEditField())
         ->setKey('name')
         ->setLabel(pht('Name'))
         ->setPlaceholder($this->getDefaultName())
         ->setValue($config->getPanelProperty('name')),
     );
   }
 
   protected function newNavigationMenuItems(
     PhabricatorProfilePanelConfiguration $config) {
 
     $project = $config->getProfileObject();
 
     $id = $project->getID();
     $picture = $project->getProfileImageURI();
     $name = $project->getName();
 
     $href = "/project/profile/{$id}/";
 
     $item = $this->newItem()
       ->setHref($href)
       ->setName($name)
       ->setProfileImage($picture);
 
     return array(
       $item,
     );
   }
 
 }
diff --git a/src/applications/project/profilepanel/PhabricatorProjectWorkboardProfilePanel.php b/src/applications/project/profilepanel/PhabricatorProjectWorkboardProfilePanel.php
index 02b54537e5..f8b2abfc2f 100644
--- a/src/applications/project/profilepanel/PhabricatorProjectWorkboardProfilePanel.php
+++ b/src/applications/project/profilepanel/PhabricatorProjectWorkboardProfilePanel.php
@@ -1,74 +1,79 @@
 <?php
 
 final class PhabricatorProjectWorkboardProfilePanel
   extends PhabricatorProfilePanel {
 
   const PANELKEY = 'project.workboard';
 
   public function getPanelTypeName() {
     return pht('Project Workboard');
   }
 
   private function getDefaultName() {
     return pht('Workboard');
   }
 
+  public function canMakeDefault(
+    PhabricatorProfilePanelConfiguration $config) {
+    return true;
+  }
+
   public function getDisplayName(
     PhabricatorProfilePanelConfiguration $config) {
     $name = $config->getPanelProperty('name');
 
     if (strlen($name)) {
       return $name;
     }
 
     return $this->getDefaultName();
   }
 
   public function buildEditEngineFields(
     PhabricatorProfilePanelConfiguration $config) {
     return array(
       id(new PhabricatorTextEditField())
         ->setKey('name')
         ->setLabel(pht('Name'))
         ->setPlaceholder($this->getDefaultName())
         ->setValue($config->getPanelProperty('name')),
     );
   }
 
   protected function newNavigationMenuItems(
     PhabricatorProfilePanelConfiguration $config) {
     $viewer = $this->getViewer();
 
     // Workboards are only available if Maniphest is installed.
     $class = 'PhabricatorManiphestApplication';
     if (!PhabricatorApplication::isClassInstalledForViewer($class, $viewer)) {
       return array();
     }
 
     $project = $config->getProfileObject();
 
     $columns = id(new PhabricatorProjectColumnQuery())
       ->setViewer($viewer)
       ->withProjectPHIDs(array($project->getPHID()))
       ->execute();
     if ($columns) {
       $icon = 'fa-columns';
     } else {
       $icon = 'fa-columns grey';
     }
 
     $id = $project->getID();
     $href = "/project/board/{$id}/";
     $name = $this->getDisplayName($config);
 
     $item = $this->newItem()
       ->setHref($href)
       ->setName($name)
       ->setIcon($icon);
 
     return array(
       $item,
     );
   }
 
 }
diff --git a/src/applications/search/engine/PhabricatorProfilePanelEngine.php b/src/applications/search/engine/PhabricatorProfilePanelEngine.php
index 9ab8d6c591..ea4cefce56 100644
--- a/src/applications/search/engine/PhabricatorProfilePanelEngine.php
+++ b/src/applications/search/engine/PhabricatorProfilePanelEngine.php
@@ -1,756 +1,949 @@
 <?php
 
 abstract class PhabricatorProfilePanelEngine extends Phobject {
 
   private $viewer;
   private $profileObject;
   private $panels;
+  private $defaultPanel;
   private $controller;
   private $navigation;
 
   public function setViewer(PhabricatorUser $viewer) {
     $this->viewer = $viewer;
     return $this;
   }
 
   public function getViewer() {
     return $this->viewer;
   }
 
   public function setProfileObject($profile_object) {
     $this->profileObject = $profile_object;
     return $this;
   }
 
   public function getProfileObject() {
     return $this->profileObject;
   }
 
   public function setController(PhabricatorController $controller) {
     $this->controller = $controller;
     return $this;
   }
 
   public function getController() {
     return $this->controller;
   }
 
+  private function setDefaultPanel(
+    PhabricatorProfilePanelConfiguration $default_panel) {
+    $this->defaultPanel = $default_panel;
+    return $this;
+  }
+
+  public function getDefaultPanel() {
+    $this->loadPanels();
+    return $this->defaultPanel;
+  }
+
   abstract protected function getPanelURI($path);
 
   protected function isPanelEngineConfigurable() {
     return PhabricatorEnv::getEnvConfig('phabricator.show-prototypes');
   }
 
   public function buildResponse() {
     $controller = $this->getController();
 
     $viewer = $controller->getViewer();
     $this->setViewer($viewer);
 
     $request = $controller->getRequest();
 
     $panel_action = $request->getURIData('panelAction');
 
     // If the engine is not configurable, don't respond to any of the editing
     // or configuration routes.
     if (!$this->isPanelEngineConfigurable()) {
       switch ($panel_action) {
         case 'view':
           break;
         default:
           return new Aphront404Response();
       }
     }
 
     $panel_id = $request->getURIData('panelID');
 
     $panel_list = $this->loadPanels();
 
     $selected_panel = null;
     if (strlen($panel_id)) {
       $panel_id_int = (int)$panel_id;
       foreach ($panel_list as $panel) {
         if ($panel_id_int) {
           if ((int)$panel->getID() === $panel_id_int) {
             $selected_panel = $panel;
             break;
           }
         }
 
         $builtin_key = $panel->getBuiltinKey();
         if ($builtin_key === (string)$panel_id) {
           $selected_panel = $panel;
           break;
         }
       }
     }
 
     switch ($panel_action) {
       case 'view':
       case 'info':
       case 'hide':
+      case 'default':
       case 'builtin':
         if (!$selected_panel) {
           return new Aphront404Response();
         }
         break;
     }
 
     $navigation = $this->buildNavigation();
     $navigation->selectFilter('panel.configure');
 
     $crumbs = $controller->buildApplicationCrumbsForEditEngine();
 
     switch ($panel_action) {
       case 'view':
         $content = $this->buildPanelViewContent($selected_panel);
         break;
       case 'configure':
         $content = $this->buildPanelConfigureContent($panel_list);
         $crumbs->addTextCrumb(pht('Configure Menu'));
         break;
       case 'reorder':
         $content = $this->buildPanelReorderContent($panel_list);
         break;
       case 'new':
         $panel_key = $request->getURIData('panelKey');
         $content = $this->buildPanelNewContent($panel_key);
         break;
       case 'builtin':
         $content = $this->buildPanelBuiltinContent($selected_panel);
         break;
       case 'hide':
         $content = $this->buildPanelHideContent($selected_panel);
         break;
+      case 'default':
+        $content = $this->buildPanelDefaultContent(
+          $selected_panel,
+          $panel_list);
+        break;
       case 'edit':
         $content = $this->buildPanelEditContent();
         break;
       default:
         throw new Exception(
           pht(
             'Unsupported panel action "%s".',
             $panel_action));
     }
 
     if ($content instanceof AphrontResponse) {
       return $content;
     }
 
     if ($content instanceof AphrontResponseProducerInterface) {
       return $content;
     }
 
     return $controller->newPage()
       ->setTitle(pht('Profile Stuff'))
       ->setNavigation($navigation)
       ->setCrumbs($crumbs)
       ->appendChild($content);
   }
 
   public function buildNavigation() {
     if ($this->navigation) {
       return $this->navigation;
     }
 
     $nav = id(new AphrontSideNavFilterView())
       ->setIsProfileMenu(true)
       ->setBaseURI(new PhutilURI($this->getPanelURI('')));
 
     $panels = $this->getPanels();
 
     foreach ($panels as $panel) {
       if ($panel->isDisabled()) {
         continue;
       }
 
       $items = $panel->buildNavigationMenuItems();
       foreach ($items as $item) {
         $this->validateNavigationMenuItem($item);
       }
 
       // If the panel produced only a single item which does not otherwise
       // have a key, try to automatically assign it a reasonable key. This
       // makes selecting the correct item simpler.
 
       if (count($items) == 1) {
         $item = head($items);
         if ($item->getKey() === null) {
           $builtin_key = $panel->getBuiltinKey();
           $panel_phid = $panel->getPHID();
           if ($builtin_key !== null) {
             $item->setKey($builtin_key);
           } else if ($panel_phid !== null) {
             $item->setKey($panel_phid);
           }
         }
       }
 
       foreach ($items as $item) {
         $nav->addMenuItem($item);
       }
     }
 
     $more_items = $this->newAutomaticMenuItems($nav);
     foreach ($more_items as $item) {
       $nav->addMenuItem($item);
     }
 
     $nav->selectFilter(null);
 
     $this->navigation = $nav;
     return $this->navigation;
   }
 
   private function getPanels() {
     if ($this->panels === null) {
       $this->panels = $this->loadPanels();
     }
 
     return $this->panels;
   }
 
   private function loadPanels() {
     $viewer = $this->getViewer();
     $object = $this->getProfileObject();
 
     $panels = $this->loadBuiltinProfilePanels();
 
     $stored_panels = id(new PhabricatorProfilePanelConfigurationQuery())
       ->setViewer($viewer)
       ->withProfilePHIDs(array($object->getPHID()))
       ->execute();
 
     // Merge the stored panels into the builtin panels. If a builtin panel has
     // a stored version, replace the defaults with the stored changes.
     foreach ($stored_panels as $stored_panel) {
       $builtin_key = $stored_panel->getBuiltinKey();
       if ($builtin_key !== null) {
-        $panels[$builtin_key] = $stored_panel;
+        // If this builtin actually exists, replace the builtin with the
+        // stored configuration. Otherwise, we're just going to drop the
+        // stored config: it corresponds to an out-of-date or uninstalled
+        // panel.
+        if (isset($panels[$builtin_key])) {
+          $panels[$builtin_key] = $stored_panel;
+        } else {
+          continue;
+        }
       } else {
         $panels[] = $stored_panel;
       }
     }
 
     foreach ($panels as $panel) {
       $impl = $panel->getPanel();
 
       $impl->setViewer($viewer);
     }
 
     $panels = msort($panels, 'getSortKey');
 
     // Normalize keys since callers shouldn't rely on this array being
     // partially keyed.
     $panels = array_values($panels);
 
+
+    // Make sure exactly one valid panel is marked as default.
+    $default = null;
+    $first = null;
+    foreach ($panels as $panel) {
+      if (!$panel->canMakeDefault()) {
+        continue;
+      }
+
+      if ($panel->isDefault()) {
+        $default = $panel;
+        break;
+      }
+
+      if ($first === null) {
+        $first = $panel;
+      }
+    }
+
+    if (!$default) {
+      $default = $first;
+    }
+
+    if ($default) {
+      $this->setDefaultPanel($default);
+    }
+
     return $panels;
   }
 
   private function loadBuiltinProfilePanels() {
     $object = $this->getProfileObject();
     $builtins = $this->getBuiltinProfilePanels($object);
 
     $panels = PhabricatorProfilePanel::getAllPanels();
 
     $order = 1;
     $map = array();
     foreach ($builtins as $builtin) {
       $builtin_key = $builtin->getBuiltinKey();
 
       if (!$builtin_key) {
         throw new Exception(
           pht(
             'Object produced a builtin panel with no builtin panel key! '.
             'Builtin panels must have a unique key.'));
       }
 
       if (isset($map[$builtin_key])) {
         throw new Exception(
           pht(
             'Object produced two panels with the same builtin key ("%s"). '.
             'Each panel must have a unique builtin key.',
             $builtin_key));
       }
 
       $panel_key = $builtin->getPanelKey();
 
       $panel = idx($panels, $panel_key);
       if (!$panel) {
         throw new Exception(
           pht(
             'Builtin panel ("%s") specifies a bad panel key ("%s"); there '.
             'is no corresponding panel implementation available.',
             $builtin_key,
             $panel_key));
       }
 
       $builtin
         ->setProfilePHID($object->getPHID())
         ->attachPanel($panel)
         ->attachProfileObject($object)
         ->setPanelOrder($order);
 
       $map[$builtin_key] = $builtin;
 
       $order++;
     }
 
     return $map;
   }
 
   private function validateNavigationMenuItem($item) {
     if (!($item instanceof PHUIListItemView)) {
       throw new Exception(
         pht(
           'Expected buildNavigationMenuItems() to return a list of '.
           'PHUIListItemView objects, but got a surprise.'));
     }
   }
 
   private function newAutomaticMenuItems(AphrontSideNavFilterView $nav) {
     $items = array();
 
     // NOTE: We're adding a spacer item for the fixed footer, so that if the
     // menu taller than the page content you can still scroll down the page far
     // enough to access the last item without the content being obscured by the
     // fixed items.
     $items[] = id(new PHUIListItemView())
       ->setHideInApplicationMenu(true)
       ->addClass('phui-profile-menu-spacer');
 
     if ($this->isPanelEngineConfigurable()) {
       $viewer = $this->getViewer();
       $object = $this->getProfileObject();
 
       $can_edit = PhabricatorPolicyFilter::hasCapability(
         $viewer,
         $object,
         PhabricatorPolicyCapability::CAN_EDIT);
 
       $expanded_edit_icon = id(new PHUIIconCircleView())
         ->addClass('phui-list-item-icon')
         ->addClass('phui-profile-menu-visible-when-expanded')
         ->setIconFont('fa-pencil');
 
       $collapsed_edit_icon = id(new PHUIIconCircleView())
         ->addClass('phui-list-item-icon')
         ->addClass('phui-profile-menu-visible-when-collapsed')
         ->setIconFont('fa-pencil')
         ->addSigil('has-tooltip')
         ->setMetadata(
           array(
             'tip' => pht('Edit Menu'),
             'align' => 'E',
           ));
 
       $items[] = id(new PHUIListItemView())
         ->setName('Edit Menu')
         ->setKey('panel.configure')
         ->addIcon($expanded_edit_icon)
         ->addIcon($collapsed_edit_icon)
         ->addClass('phui-profile-menu-footer')
         ->addClass('phui-profile-menu-footer-1')
         ->setHref($this->getPanelURI('configure/'))
         ->setDisabled(!$can_edit)
         ->setWorkflow(!$can_edit);
     }
 
     $collapse_id = celerity_generate_unique_node_id();
 
     $viewer = $this->getViewer();
 
     $collapse_key =
       PhabricatorUserPreferences::PREFERENCE_PROFILE_MENU_COLLAPSED;
 
     $preferences = $viewer->loadPreferences();
     $is_collapsed = $preferences->getPreference($collapse_key, false);
 
     if ($is_collapsed) {
       $nav->addClass('phui-profile-menu-collapsed');
     } else {
       $nav->addClass('phui-profile-menu-expanded');
     }
 
     if ($viewer->isLoggedIn()) {
       $settings_uri = '/settings/adjust/?key='.$collapse_key;
     } else {
       $settings_uri = null;
     }
 
     Javelin::initBehavior(
       'phui-profile-menu',
       array(
         'menuID' => $nav->getMainID(),
         'collapseID' => $collapse_id,
         'isCollapsed' => (bool)$is_collapsed,
         'settingsURI' => $settings_uri,
       ));
 
     $collapse_icon = id(new PHUIIconCircleView())
       ->addClass('phui-list-item-icon')
       ->addClass('phui-profile-menu-visible-when-expanded')
       ->setIconFont('fa-angle-left');
 
     $expand_icon = id(new PHUIIconCircleView())
       ->addClass('phui-list-item-icon')
       ->addClass('phui-profile-menu-visible-when-collapsed')
       ->addSigil('has-tooltip')
       ->setMetadata(
         array(
           'tip' => pht('Expand'),
           'align' => 'E',
         ))
       ->setIconFont('fa-angle-right');
 
     $items[] = id(new PHUIListItemView())
       ->setName('Collapse')
       ->addIcon($collapse_icon)
       ->addIcon($expand_icon)
       ->setID($collapse_id)
       ->addClass('phui-profile-menu-footer')
       ->addClass('phui-profile-menu-footer-2')
       ->setHideInApplicationMenu(true)
       ->setHref('#');
 
     return $items;
   }
 
   public function getConfigureURI() {
     return $this->getPanelURI('configure/');
   }
 
   private function buildPanelReorderContent(array $panels) {
     $viewer = $this->getViewer();
     $object = $this->getProfileObject();
 
     PhabricatorPolicyFilter::requireCapability(
       $viewer,
       $object,
       PhabricatorPolicyCapability::CAN_EDIT);
 
     $controller = $this->getController();
     $request = $controller->getRequest();
 
     $request->validateCSRF();
 
     $order = $request->getStrList('order');
 
     $by_builtin = array();
     $by_id = array();
 
     foreach ($panels as $key => $panel) {
       $id = $panel->getID();
       if ($id) {
         $by_id[$id] = $key;
         continue;
       }
 
       $builtin_key = $panel->getBuiltinKey();
       if ($builtin_key) {
         $by_builtin[$builtin_key] = $key;
         continue;
       }
     }
 
     $key_order = array();
     foreach ($order as $order_item) {
       if (isset($by_id[$order_item])) {
         $key_order[] = $by_id[$order_item];
         continue;
       }
       if (isset($by_builtin[$order_item])) {
         $key_order[] = $by_builtin[$order_item];
         continue;
       }
     }
 
     $panels = array_select_keys($panels, $key_order) + $panels;
 
     $type_order =
       PhabricatorProfilePanelConfigurationTransaction::TYPE_ORDER;
 
     $order = 1;
     foreach ($panels as $panel) {
       $xactions = array();
 
       $xactions[] = id(new PhabricatorProfilePanelConfigurationTransaction())
         ->setTransactionType($type_order)
         ->setNewValue($order);
 
       $editor = id(new PhabricatorProfilePanelEditor())
         ->setContentSourceFromRequest($request)
         ->setActor($viewer)
         ->setContinueOnMissingFields(true)
         ->setContinueOnNoEffect(true)
         ->applyTransactions($panel, $xactions);
 
       $order++;
     }
 
     return id(new AphrontRedirectResponse())
       ->setURI($this->getConfigureURI());
   }
 
 
   private function buildPanelConfigureContent(array $panels) {
     $viewer = $this->getViewer();
     $object = $this->getProfileObject();
 
     PhabricatorPolicyFilter::requireCapability(
       $viewer,
       $object,
       PhabricatorPolicyCapability::CAN_EDIT);
 
     $list_id = celerity_generate_unique_node_id();
 
     Javelin::initBehavior(
       'reorder-profile-menu-items',
       array(
         'listID' => $list_id,
         'orderURI' => $this->getPanelURI('reorder/'),
       ));
 
     $list = id(new PHUIObjectItemListView())
       ->setID($list_id);
 
     foreach ($panels as $panel) {
       $id = $panel->getID();
       $builtin_key = $panel->getBuiltinKey();
 
       $can_edit = PhabricatorPolicyFilter::hasCapability(
         $viewer,
         $panel,
         PhabricatorPolicyCapability::CAN_EDIT);
 
       $item = id(new PHUIObjectItemView());
 
       $name = $panel->getDisplayName();
       $type = $panel->getPanelTypeName();
       if (!strlen(trim($name))) {
         $name = pht('Untitled "%s" Item', $type);
       }
 
       $item->setHeader($name);
       $item->addAttribute($type);
 
       if ($can_edit) {
         $item
           ->setGrippable(true)
           ->addSigil('profile-menu-item')
           ->setMetadata(
             array(
               'key' => nonempty($id, $builtin_key),
             ));
 
+        if ($id) {
+          $default_uri = $this->getPanelURI("default/{$id}/");
+        } else {
+          $default_uri = $this->getPanelURI("default/{$builtin_key}/");
+        }
+
+        if ($panel->isDefault()) {
+          $default_icon = 'fa-thumb-tack green';
+          $default_text = pht('Current Default');
+        } else if ($panel->canMakeDefault()) {
+          $default_icon = 'fa-thumb-tack';
+          $default_text = pht('Make Default');
+        } else {
+          $default_text = null;
+        }
+
+        if ($default_text !== null) {
+          $item->addAction(
+            id(new PHUIListItemView())
+              ->setHref($default_uri)
+              ->setWorkflow(true)
+              ->setName($default_text)
+              ->setIcon($default_icon));
+        }
+
         if ($id) {
           $item->setHref($this->getPanelURI("edit/{$id}/"));
           $hide_uri = $this->getPanelURI("hide/{$id}/");
         } else {
           $item->setHref($this->getPanelURI("builtin/{$builtin_key}/"));
           $hide_uri = $this->getPanelURI("hide/{$builtin_key}/");
         }
 
+        if ($panel->isDisabled()) {
+          $hide_icon = 'fa-plus';
+          $hide_text = pht('Show');
+        } else if ($panel->getBuiltinKey() !== null) {
+          $hide_icon = 'fa-times';
+          $hide_text = pht('Disable');
+        } else {
+          $hide_icon = 'fa-times';
+          $hide_text = pht('Delete');
+        }
+
         $item->addAction(
           id(new PHUIListItemView())
             ->setHref($hide_uri)
             ->setWorkflow(true)
-            ->setIcon(pht('fa-eye')));
+            ->setName($hide_text)
+            ->setIcon($hide_icon));
       }
 
       if ($panel->isDisabled()) {
         $item->setDisabled(true);
-        $item->addIcon('fa-times grey', pht('Disabled'));
       }
 
       $list->addItem($item);
     }
 
     $action_view = id(new PhabricatorActionListView())
       ->setUser($viewer);
 
     $panel_types = PhabricatorProfilePanel::getAllPanels();
 
     $action_view->addAction(
       id(new PhabricatorActionView())
         ->setLabel(true)
         ->setName(pht('Add New Menu Item...')));
 
     foreach ($panel_types as $panel_type) {
       if (!$panel_type->canAddToObject($object)) {
         continue;
       }
 
       $panel_key = $panel_type->getPanelKey();
 
       $action_view->addAction(
         id(new PhabricatorActionView())
           ->setIcon($panel_type->getPanelTypeIcon())
           ->setName($panel_type->getPanelTypeName())
           ->setHref($this->getPanelURI("new/{$panel_key}/")));
     }
 
     $action_view->addAction(
       id(new PhabricatorActionView())
         ->setLabel(true)
         ->setName(pht('Documentation')));
 
     $action_view->addAction(
       id(new PhabricatorActionView())
         ->setIcon('fa-book')
         ->setName(pht('TODO: Write Documentation')));
 
     $action_button = id(new PHUIButtonView())
       ->setTag('a')
       ->setText(pht('Configure Menu'))
       ->setHref('#')
       ->setIconFont('fa-gear')
       ->setDropdownMenu($action_view);
 
     $header = id(new PHUIHeaderView())
       ->setHeader(pht('Profile Menu Items'))
       ->addActionLink($action_button);
 
     $box = id(new PHUIObjectBoxView())
       ->setHeader($header)
       ->setObjectList($list);
 
     return $box;
   }
 
   private function buildPanelNewContent($panel_key) {
     $panel_types = PhabricatorProfilePanel::getAllPanels();
     $panel_type = idx($panel_types, $panel_key);
     if (!$panel_type) {
       return new Aphront404Response();
     }
 
     $object = $this->getProfileObject();
     if (!$panel_type->canAddToObject($object)) {
       return new Aphront404Response();
     }
 
     $configuration =
       PhabricatorProfilePanelConfiguration::initializeNewPanelConfiguration(
         $object,
         $panel_type);
 
     $viewer = $this->getViewer();
 
     PhabricatorPolicyFilter::requireCapability(
       $viewer,
       $configuration,
       PhabricatorPolicyCapability::CAN_EDIT);
 
     $controller = $this->getController();
 
     return id(new PhabricatorProfilePanelEditEngine())
       ->setPanelEngine($this)
       ->setProfileObject($object)
       ->setNewPanelConfiguration($configuration)
       ->setController($controller)
       ->buildResponse();
   }
 
   private function buildPanelEditContent() {
     $viewer = $this->getViewer();
     $object = $this->getProfileObject();
     $controller = $this->getController();
 
     return id(new PhabricatorProfilePanelEditEngine())
       ->setPanelEngine($this)
       ->setProfileObject($object)
       ->setController($controller)
       ->buildResponse();
   }
 
   private function buildPanelBuiltinContent(
     PhabricatorProfilePanelConfiguration $configuration) {
 
     // If this builtin panel has already been persisted, redirect to the
     // edit page.
     $id = $configuration->getID();
     if ($id) {
       return id(new AphrontRedirectResponse())
         ->setURI($this->getPanelURI("edit/{$id}/"));
     }
 
     // Otherwise, act like we're creating a new panel, we're just starting
     // with the builtin template.
     $viewer = $this->getViewer();
 
     PhabricatorPolicyFilter::requireCapability(
       $viewer,
       $configuration,
       PhabricatorPolicyCapability::CAN_EDIT);
 
     $object = $this->getProfileObject();
     $controller = $this->getController();
 
     return id(new PhabricatorProfilePanelEditEngine())
       ->setIsBuiltin(true)
       ->setPanelEngine($this)
       ->setProfileObject($object)
       ->setNewPanelConfiguration($configuration)
       ->setController($controller)
       ->buildResponse();
   }
 
   private function buildPanelHideContent(
     PhabricatorProfilePanelConfiguration $configuration) {
 
     $controller = $this->getController();
     $request = $controller->getRequest();
     $viewer = $this->getViewer();
 
     PhabricatorPolicyFilter::requireCapability(
       $viewer,
       $configuration,
       PhabricatorPolicyCapability::CAN_EDIT);
 
+    if ($configuration->getBuiltinKey() === null) {
+      $new_value = null;
+
+      $title = pht('Delete Menu Item');
+      $body = pht('Delete this menu item?');
+      $button = pht('Delete Menu Item');
+    } else if ($configuration->isDisabled()) {
+      $new_value = PhabricatorProfilePanelConfiguration::VISIBILITY_VISIBLE;
+
+      $title = pht('Enable Menu Item');
+      $body = pht(
+        'Enable this menu item? It will appear in the menu again.');
+      $button = pht('Enable Menu Item');
+    } else {
+      $new_value = PhabricatorProfilePanelConfiguration::VISIBILITY_DISABLED;
+
+      $title = pht('Disable Menu Item');
+      $body = pht(
+        'Disable this menu item? It will no longer appear in the menu, but '.
+        'you can re-enable it later.');
+      $button = pht('Disable Menu Item');
+    }
+
     $v_visibility = $configuration->getVisibility();
     if ($request->isFormPost()) {
-      $v_visibility = $request->getStr('visibility');
+      if ($new_value === null) {
+        $configuration->delete();
+      } else {
+        $type_visibility =
+          PhabricatorProfilePanelConfigurationTransaction::TYPE_VISIBILITY;
+
+        $xactions = array();
+
+        $xactions[] = id(new PhabricatorProfilePanelConfigurationTransaction())
+          ->setTransactionType($type_visibility)
+          ->setNewValue($new_value);
+
+        $editor = id(new PhabricatorProfilePanelEditor())
+          ->setContentSourceFromRequest($request)
+          ->setActor($viewer)
+          ->setContinueOnMissingFields(true)
+          ->setContinueOnNoEffect(true)
+          ->applyTransactions($configuration, $xactions);
+      }
+
+      return id(new AphrontRedirectResponse())
+        ->setURI($this->getConfigureURI());
+    }
+
+    return $controller->newDialog()
+      ->setTitle($title)
+      ->appendParagraph($body)
+      ->addCancelButton($this->getConfigureURI())
+      ->addSubmitButton($button);
+  }
+
+  private function buildPanelDefaultContent(
+    PhabricatorProfilePanelConfiguration $configuration,
+    array $panels) {
+
+    $controller = $this->getController();
+    $request = $controller->getRequest();
+    $viewer = $this->getViewer();
+
+    PhabricatorPolicyFilter::requireCapability(
+      $viewer,
+      $configuration,
+      PhabricatorPolicyCapability::CAN_EDIT);
+
+    $done_uri = $this->getConfigureURI();
+
+    if (!$configuration->canMakeDefault()) {
+      return $controller->newDialog()
+        ->setTitle(pht('Not Defaultable'))
+        ->appendParagraph(
+          pht(
+            'This item can not be set as the default item. This is usually '.
+            'because the item has no page of its own, or links to an '.
+            'external page.'))
+        ->addCancelButton($done_uri);
+    }
+
+    if ($configuration->isDefault()) {
+      return $controller->newDialog()
+        ->setTitle(pht('Already Default'))
+        ->appendParagraph(
+          pht(
+            'This item is already set as the default item for this menu.'))
+        ->addCancelButton($done_uri);
+    }
+
+    $type_visibility =
+      PhabricatorProfilePanelConfigurationTransaction::TYPE_VISIBILITY;
+
+    $v_visible = PhabricatorProfilePanelConfiguration::VISIBILITY_VISIBLE;
+    $v_default = PhabricatorProfilePanelConfiguration::VISIBILITY_DEFAULT;
+
+    if ($request->isFormPost()) {
+      // First, mark any existing default panels as merely visible.
+      foreach ($panels as $panel) {
+        if (!$panel->isDefault()) {
+          continue;
+        }
+
+        $xactions = array();
 
-      $type_visibility =
-        PhabricatorProfilePanelConfigurationTransaction::TYPE_VISIBILITY;
+        $xactions[] = id(new PhabricatorProfilePanelConfigurationTransaction())
+          ->setTransactionType($type_visibility)
+          ->setNewValue($v_visible);
+
+        $editor = id(new PhabricatorProfilePanelEditor())
+          ->setContentSourceFromRequest($request)
+          ->setActor($viewer)
+          ->setContinueOnMissingFields(true)
+          ->setContinueOnNoEffect(true)
+          ->applyTransactions($panel, $xactions);
+      }
 
+      // Now, make this panel the default.
       $xactions = array();
 
       $xactions[] = id(new PhabricatorProfilePanelConfigurationTransaction())
         ->setTransactionType($type_visibility)
-        ->setNewValue($v_visibility);
+        ->setNewValue($v_default);
 
       $editor = id(new PhabricatorProfilePanelEditor())
         ->setContentSourceFromRequest($request)
         ->setActor($viewer)
         ->setContinueOnMissingFields(true)
         ->setContinueOnNoEffect(true)
         ->applyTransactions($configuration, $xactions);
 
       return id(new AphrontRedirectResponse())
-        ->setURI($this->getConfigureURI());
+        ->setURI($done_uri);
     }
 
-    $map = PhabricatorProfilePanelConfiguration::getVisibilityNameMap();
-
-    $form = id(new AphrontFormView())
-      ->setUser($viewer)
-      ->appendControl(
-        id(new AphrontFormSelectControl())
-          ->setName('visibility')
-          ->setLabel(pht('Visibility'))
-          ->setValue($v_visibility)
-          ->setOptions($map));
-
     return $controller->newDialog()
-      ->setTitle(pht('Change Item Visibility'))
-      ->appendForm($form)
-      ->addCancelButton($this->getConfigureURI())
-      ->addSubmitButton(pht('Save Changes'));
+      ->setTitle(pht('Make Default'))
+      ->appendParagraph(
+        pht(
+          'Set this item as the default for this menu? Users arriving on '.
+          'this page will be shown the content of this item by default.'))
+      ->addCancelButton($done_uri)
+      ->addSubmitButton(pht('Make Default'));
   }
 
   protected function newPanel() {
     return PhabricatorProfilePanelConfiguration::initializeNewBuiltin();
   }
 
 }
diff --git a/src/applications/search/profilepanel/PhabricatorProfilePanel.php b/src/applications/search/profilepanel/PhabricatorProfilePanel.php
index 43637a6678..49159dbf8d 100644
--- a/src/applications/search/profilepanel/PhabricatorProfilePanel.php
+++ b/src/applications/search/profilepanel/PhabricatorProfilePanel.php
@@ -1,57 +1,62 @@
 <?php
 
 abstract class PhabricatorProfilePanel extends Phobject {
 
   private $viewer;
 
   final public function buildNavigationMenuItems(
     PhabricatorProfilePanelConfiguration $config) {
     return $this->newNavigationMenuItems($config);
   }
 
   abstract protected function newNavigationMenuItems(
     PhabricatorProfilePanelConfiguration $config);
 
   public function getPanelTypeIcon() {
     return null;
   }
 
   abstract public function getPanelTypeName();
 
   abstract public function getDisplayName(
     PhabricatorProfilePanelConfiguration $config);
 
   public function buildEditEngineFields(
     PhabricatorProfilePanelConfiguration $config) {
     return array();
   }
 
   public function canAddToObject($object) {
     return false;
   }
 
+  public function canMakeDefault(
+    PhabricatorProfilePanelConfiguration $config) {
+    return false;
+  }
+
   public function setViewer(PhabricatorUser $viewer) {
     $this->viewer = $viewer;
     return $this;
   }
 
   public function getViewer() {
     return $this->viewer;
   }
 
   final public function getPanelKey() {
     return $this->getPhobjectClassConstant('PANELKEY');
   }
 
   final public static function getAllPanels() {
     return id(new PhutilClassMapQuery())
       ->setAncestorClass(__CLASS__)
       ->setUniqueMethod('getPanelKey')
       ->execute();
   }
 
   protected function newItem() {
     return new PHUIListItemView();
   }
 
 }
diff --git a/src/applications/search/storage/PhabricatorProfilePanelConfiguration.php b/src/applications/search/storage/PhabricatorProfilePanelConfiguration.php
index a4813592f6..127ce6b688 100644
--- a/src/applications/search/storage/PhabricatorProfilePanelConfiguration.php
+++ b/src/applications/search/storage/PhabricatorProfilePanelConfiguration.php
@@ -1,192 +1,194 @@
 <?php
 
 final class PhabricatorProfilePanelConfiguration
   extends PhabricatorSearchDAO
   implements
     PhabricatorPolicyInterface,
     PhabricatorExtendedPolicyInterface,
     PhabricatorApplicationTransactionInterface {
 
   protected $profilePHID;
   protected $panelKey;
   protected $builtinKey;
   protected $panelOrder;
   protected $visibility;
   protected $panelProperties = array();
 
   private $profileObject = self::ATTACHABLE;
   private $panel = self::ATTACHABLE;
 
+  const VISIBILITY_DEFAULT = 'default';
   const VISIBILITY_VISIBLE = 'visible';
   const VISIBILITY_DISABLED = 'disabled';
 
   public static function initializeNewBuiltin() {
     return id(new self())
       ->setVisibility(self::VISIBILITY_VISIBLE);
   }
 
   public static function initializeNewPanelConfiguration(
     $profile_object,
     PhabricatorProfilePanel $panel) {
 
     return self::initializeNewBuiltin()
       ->setProfilePHID($profile_object->getPHID())
       ->setPanelKey($panel->getPanelKey())
       ->attachPanel($panel)
       ->attachProfileObject($profile_object);
   }
 
   protected function getConfiguration() {
     return array(
       self::CONFIG_AUX_PHID => true,
       self::CONFIG_SERIALIZATION => array(
         'panelProperties' => self::SERIALIZATION_JSON,
       ),
       self::CONFIG_COLUMN_SCHEMA => array(
         'panelKey' => 'text64',
         'builtinKey' => 'text64?',
         'panelOrder' => 'uint32?',
         'visibility' => 'text32',
       ),
       self::CONFIG_KEY_SCHEMA => array(
         'key_profile' => array(
           'columns' => array('profilePHID', 'panelOrder'),
         ),
       ),
     ) + parent::getConfiguration();
   }
 
-  public static function getVisibilityNameMap() {
-    return array(
-      self::VISIBILITY_VISIBLE => pht('Visible'),
-      self::VISIBILITY_DISABLED => pht('Disabled'),
-    );
-  }
-
   public function generatePHID() {
     return PhabricatorPHID::generateNewPHID(
       PhabricatorProfilePanelPHIDType::TYPECONST);
   }
 
   public function attachPanel(PhabricatorProfilePanel $panel) {
     $this->panel = $panel;
     return $this;
   }
 
   public function getPanel() {
     return $this->assertAttached($this->panel);
   }
 
   public function attachProfileObject($profile_object) {
     $this->profileObject = $profile_object;
     return $this;
   }
 
   public function getProfileObject() {
     return $this->assertAttached($this->profileObject);
   }
 
   public function setPanelProperty($key, $value) {
     $this->panelProperties[$key] = $value;
     return $this;
   }
 
   public function getPanelProperty($key, $default = null) {
     return idx($this->panelProperties, $key, $default);
   }
 
   public function buildNavigationMenuItems() {
     return $this->getPanel()->buildNavigationMenuItems($this);
   }
 
   public function getPanelTypeName() {
     return $this->getPanel()->getPanelTypeName();
   }
 
   public function getDisplayName() {
     return $this->getPanel()->getDisplayName($this);
   }
 
+  public function canMakeDefault() {
+    return $this->getPanel()->canMakeDefault($this);
+  }
+
   public function getSortKey() {
     $order = $this->getPanelOrder();
     if ($order === null) {
       $order = 'Z';
     } else {
       $order = sprintf('%020d', $order);
     }
 
     return sprintf(
       '~%s%020d',
       $order,
       $this->getID());
   }
 
   public function isDisabled() {
     return ($this->getVisibility() === self::VISIBILITY_DISABLED);
   }
 
+  public function isDefault() {
+    return ($this->getVisibility() === self::VISIBILITY_DEFAULT);
+  }
+
 
 /* -(  PhabricatorPolicyInterface  )----------------------------------------- */
 
 
   public function getCapabilities() {
     return array(
       PhabricatorPolicyCapability::CAN_VIEW,
       PhabricatorPolicyCapability::CAN_EDIT,
     );
   }
 
 
   public function getPolicy($capability) {
     return PhabricatorPolicies::getMostOpenPolicy();
   }
 
 
   public function hasAutomaticCapability($capability, PhabricatorUser $viewer) {
     return $this->getProfileObject()->hasAutomaticCapability(
       $capability,
       $viewer);
   }
 
 
   public function describeAutomaticCapability($capability) {
     return null;
   }
 
 
 /* -(  PhabricatorExtendedPolicyInterface  )--------------------------------- */
 
 
   public function getExtendedPolicy($capability, PhabricatorUser $viewer) {
     return array(
       array(
         $this->getProfileObject(),
         $capability,
       ),
     );
   }
 
 
 /* -(  PhabricatorApplicationTransactionInterface  )------------------------- */
 
 
   public function getApplicationTransactionEditor() {
     return new PhabricatorProfilePanelEditor();
   }
 
   public function getApplicationTransactionObject() {
     return $this;
   }
 
   public function getApplicationTransactionTemplate() {
     return new PhabricatorProfilePanelConfigurationTransaction();
   }
 
   public function willRenderTimeline(
     PhabricatorApplicationTransactionView $timeline,
     AphrontRequest $request) {
 
     return $timeline;
   }
 
 }