Move add items modal logic to model view
Fire syncing event when item adding has started
Make application config not fullscreen by default

This is related to issue #267 and is part of a bigger enhancement to let
users choose the fullscreen preference.
Clean up and fix scheduler review updating
Also use bootstrap media object for exit modal
Filter out held items in offline readiness calc
Only alter scheduling when sync array has length
Remove held items when syncing from server values
Pass entire item when removing from scheduler
Only use url args on localhost for cache busting
Merge insert and remove now part of web worker
Return successful review callback when forbidden
Access larger object arrays directly from attribute
Update review error handling and recovery process
Edit definition button and store changes locally
Add vocab update check to syncing process
Add toggle button to info view and sync with server
Handle initial account download connectivity errors
Clean up several jshint conflicts and errors
Make initial download lingo more clear