Null check on current process

Change-Id: Icf88f37da2fa594d8ff59faccf18cf975355c2b4
Navigation button color option

Change-Id: I13c547f9d0c953abedf1600c9bf34dbf169e600b
Navigation button glow time and color options

Change-Id: Ie75b9d68cfbf86d3161d255279e4f87703c5338c
Merge remote-tracking branch 'sgt7/cm-10.1' into cm-10.1-sgt7