Frameworks: Expanded desktop mode (1/2)- Prueba

this commit adds expanded desktop mode. You can decide if only
navigation bar, only status bar or both are hidden when expanded
desktop was activated.

This commit also sorts the entries a bit more logical and alphabetical

Change-Id: I3fe0b1eee6e13cf10debbcbe5338fa901b785c84

Conflicts:
	core/java/android/provider/Settings.java
	policy/src/com/android/internal/policy/impl/GlobalActions.java