Working settings screen in action bar overflow

This is a super lazy all-in-one commit. Bad practice. This isn't my
project. Tough. General list of things that I did for you:

-New min SDK is 11, for now.
-Gradle plugin now uses 0.9.+
-Added activity and fragment to display the settings
-Added new strings for the settings
-Added the xml preferences definition
-Launch new activity when the settings option item is selected

You're welcome. Beer me later.