Allow changing screen-off animation (2/2)

* Allow enabling/disabling screen-off animation
* Allow selection between fade & crt effects if the device allows it

Change-Id: I5ebfab22e68ea34e3babfaacd9c8103e25932d3d
revert remote

Change-Id: Id92bf5691689483dc9fe0bf956d68c6a6a9c1292