Custom actions on navbar recents long press (1/2)

For now 7 actions are possible
1 - none
2 - last app
3 - screenshot
4 - kill app
5 - notifications panel
6 - QS panel
7 - power menu

Thanks to @kufikugel for base and idea in SlimRoms navbar and navring customization

Change-Id: Ic96d8bb31025efd7260759709ddb8d9736c2619f
Signed-off-by: siracuervo <fl.siracusa@outlook.com.ar>

Conflicts:
	core/java/android/provider/Settings.java
	core/java/com/android/internal/statusbar/IStatusBar.aidl
	core/java/com/android/internal/statusbar/IStatusBarService.aidl
	packages/SystemUI/res/values/cr_strings.xml
	packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java
	packages/SystemUI/src/com/android/systemui/statusbar/CommandQueue.java