Extended the duration of the helper narrative's frames
Increased the default word duration from 0.2 to 0.3s
Shortened helper narrative strings for clarity
Moved playback padding to xml and fixed hiding issues

(also see maxHeight updates to AutoResizeTextView)
Removed separate export button from frame editor and improved strings
Disabled swipe events on audio playback controls
Moved rotation to a background thread and animated rotation icon

Also removed unnecessary saving code in CameraActivity (use
BitmapUtilities instead)
equalsIgnoreCase rather than compareToIgnoreCase
Use BitmapUtilities to save images