fixed #71 : new Home displayed properly after a home screen change in Settings
Corrected display screen methods to maintain "homeScreenShowing" flag
Display new home if necessary at DuckDuckGo.onActivityResult
Merge pull request #72 from duckduckgo/home-screen-fix

fixed #71 : new Home displayed properly after a home screen change in Settings
Merge commit '171157e9fecb75a63d0faa05147f447d3fb5e857' into actionbar-fragments

Conflicts:
	src/com/duckduckgo/mobile/android/activity/DuckDuckGo.java