Fixed import
Added avatars to chat
Renamed sample app.
Changed launcher icons
Started styling the login screen and the action bars
Added splash screen for while initial sync is going on
Passed ApiCallback callback objects all the way up to the app so that it can handle errors
Added room methods for inviting, leaving, and sending messages and made the app use them
Fixed crash when backgrounding and foregrounding a room screen
Called support action bar
Added methods (and means from the app) to kick a user from a room
Corrected display of kicked event.
Added toast message if kicking was forbidden
Fixed ban and added it to the app options
Displayed the server error message directly for forbidden kicking or banning
Added missing membership operations from member list
Paused/resumed the event stream when the app is backgrounded
Added model classes for image messages.
Started external intent for viewing full-sized images
Merge remote-tracking branch 'remotes/origin/develop'