Remove application small/hidden tiles
Ref T5176. This paves the way for the redesign by making the homepage editor thing a little more manageable/coherent.
Not perfect, but we can clean it up a bit after the new design.
New "Pinned Applications" settings panel (this supports drag-and-drop to reorder):
Pin an app:
Unpin an app:
Reviewers: btrahan, chad
Reviewed By: chad
Maniphest Tasks: T5176
Differential Revision: https://secure.phabricator.com/D9332