CRT screen on/off animations user defined (1 of 2)

Users can dynamically enable or disable CRT Screen Off or the
elusive CRT Screen On animation.

{Maybe i'll re-work the logic for aosp use, but so far, this works fine for now. }

Change-Id: If9e1052555e1fdbcc1c718c61b5972932b2d48fa
Last App Toggle (for PIE)