Fixing crash on ios for reading feed-less stories.
Testing out perf of mongo search on starred stories.
Fixing JS exception on missing users.
Adding search box to all feeds/folders for staff only.
Showing search box.
Fixing disappearing search box.
Merge pull request #373 from ojiikun/master

Android: UI Fix
Adding search to shared stories, removing from folders.
Merge pull request #374 from ojiikun/master

Android: Fix Intel Training Actions
Refactored the premium-only message for river in anticipation of premium-only search message.
Typo on border color.
Better top border color.
Adding premium-only search message, enforced API-side. Also fixing display bug around hiding the search bar when clearing out query.
Adding search logging.
Refactoring the snot out of the keyboard shortcuts dialog, sorting them into tabs/groups. Moving keyboard shortcut 'f' to 'shift+t' (train feed), killing old 'shift+t' to hide story titles (now unnecessary thanks to the Full view), and adding '/' to search feed.
Allowing up/down arrow keys to take you out of search box and into results.
Fixing unread counts bug on ios.
Fixing #377. Killing XSS attacks by sanitizing feed titles.
Fixing mistakenly unread stories while searching.
Adding logging.