Index: src/infrastructure/celerity/CelerityResourceMap.php
===================================================================
--- src/infrastructure/celerity/CelerityResourceMap.php
+++ src/infrastructure/celerity/CelerityResourceMap.php
@@ -213,7 +213,7 @@
    *                            is unknown.
    */
   public function getRequiredSymbolsForName($name) {
-    $hash = idx($this->symbolMap, $name);
+    $hash = idx($this->nameMap, $name);
     if ($hash === null) {
       return null;
     }
Index: src/infrastructure/lint/linter/PhabricatorJavelinLinter.php
===================================================================
--- src/infrastructure/lint/linter/PhabricatorJavelinLinter.php
+++ src/infrastructure/lint/linter/PhabricatorJavelinLinter.php
@@ -147,7 +147,7 @@
       $path);
     $need = $external_classes;
 
-    $resource_name = substr($path, strlen('webroot'));
+    $resource_name = substr($path, strlen('webroot/'));
     $requires = $celerity->getRequiredSymbolsForName($resource_name);
     if (!$requires) {
       $requires = array();
@@ -170,7 +170,7 @@
         // If JS requires CSS, just assume everything is fine.
         unset($requires[$key]);
       } else {
-        $symbol_path = 'webroot'.$requires_name;
+        $symbol_path = 'webroot/'.$requires_name;
         list($ignored, $req_install) = $this->getUsedAndInstalledSymbolsForPath(
           $symbol_path);
         if (array_intersect_key($req_install, $external_classes)) {
Index: webroot/rsrc/js/core/DraggableList.js
===================================================================
--- webroot/rsrc/js/core/DraggableList.js
+++ webroot/rsrc/js/core/DraggableList.js
@@ -197,12 +197,21 @@
         break;
       }
 
+      // If the dragged row is the first row, don't allow it to be dragged
+      // into the first position, since this operation doesn't make sense.
+      if (cur_target === null) {
+        var first_item = targets[targets.length - 1].item;
+        if (dragging === first_item) {
+          cur_target = false;
+        }
+      }
+
       // If we've selected a new target, update the UI to show where we're
       // going to drop the row.
 
-      if (cur_target != target) {
+      if (cur_target !== target) {
 
-        if (target) {
+        if (target !== false) {
           JX.DOM.remove(ghost);
         }