Make RC and Camara Screen usable in portrait mode
Making RC override more similar to Camera screen so they are easier to understand.
Implementing the onDestroy, onPause, onResume methods in Camera activity.
So the RC override isn't left on when switching screens.
Removing unused button in rc screen.
Externalizing the enable/disable string.
Merge pull request #163 from arthurbenemann/RCorientation

Make RC and Camera Screen usable in portrait mode.
Closes pull #161