Add a soft-key detection method to utils
Add a bitmap from drawable extraction method to utils
Add SystemBarTint library to project
Enable Java 7 features for project
Fix memory leak: elements not being removed from AVU and AVNH
Add a CustomDrawerLayout to fix onMeasure issue with DrawerLayout
Add Settings activity, changeable wallpapers, translucent status & navigation

Adds a Settings activity which adds the ability to change themes, this encompasses the refactoring of the main views to be able to accomodate changeable and translucent background drawables, the use of the SystemBarTint library for translucent status and navigation bars, and all needed ressource additions for each corresponding function.
Rename gradient to be coherrent in its naming