[IMPROVEMENT] Show empty msg in recent emoji picker

[NEW] Chrome custom tabs support

Search width set to max

[FIX] Properly mark a room as read

[FIX] Fixed Fragment Replacement in ChatRoomActivity

[CI] Upgrade Circle CI to version 2.0

* Call markRoomAsRead in unsubscribeMessages function
* Center the text in the unread marker instead of right aligning it

[FIX] Keyboard is shown when opening the member list view.

assembleRelease

[NEW] Commands

Rocket.chat 2.0 alpha-1