GlobalActions: Bring back old goodies [1/2]

* Expose worth hidden items.
* Reboot item shows another dialog to chose from normal, recovery
  and bootloader (fastboot) mode. Needs to be activated in developer
  settings.
* Advanced reboot items are not showed on secure keyguard no matter
  if activated or not.
* Add back screenshot item.
* Cleanup code.
* New drawables (Thanks to Arz Bhatia)

Signed-off-by: @BigBrother1984 <carlosavignano@aospa.co>
Change-Id: I4c310c1718c27062ed31b143d5699e95f7183860
Signed-off-by: cj360 <ayunker551@gmail.com>

Conflicts:
	services/core/java/com/android/server/power/ShutdownThread.java