Fix crashes and cleanup...

Fixed crashes for individual mission. Fixed loading of About screen.
Cleanup code.
More fixes...

Added action bar title to detail mission fragment. Removed hard coded
strings from mission fragment. Synchronized home page selection with
navigation menu. Added temporary fix for date parsing crashes. Added
home menu constant. Fixed list adapter inflater call. Refactored
strings.
Merge branch 'fix-IndividualMissionCrashes'