FW: Navring Rework.

PS2: Moves drawables and static strings to Frameworks, Removes
     some redundant code from RC.

PS3: Needs awesome action update for now if we dont add it ill
     rebase.

PS4: Rebase and clean up, plus I added the option to turn "off" the
      navring by setting all targets to null or none.

PS5: added logic for custom icons

PS6: forgot to add Icons to the settings observer
     adjust some long press logic

PS7: Comment message clean up

PS8: Rebase of the new awesome action

PS9: cleanup

PS10: Rebase

Change-Id: Iff157e4e49407f46284f52697befe6cc3d5a42d7

Conflicts:
	core/java/android/provider/Settings.java
	core/res/res/values/symbols.xml
	packages/SystemUI/src/com/android/systemui/SearchPanelView.java