SystemUI: StayAwake Toggle

TODO:
    * Add user selectable timeout period for onLongClick
    * Need Icon

Change-Id: Ifd2051b2a6e8235160713cad3b4385dbb6d66b8f
Signed-off-by: bmc08gt <bmc08gt.teamb00sted@gmail.com>
stayawake yo

Change-Id: Ibd333f051b2a6115b3f68717521ef861b473ff40