Better expose 'QS Tiles and layout' function

Settings side changes for http://review.cyanogenmod.org/#/c/56619/

PS2: Unhide draft
PS3: Make it actually work

Change-Id: I331ffdd17574d32d40d423a6d37240361288bce4
Advanced low battery indicator options (2/2)

http://i.imgur.com/EUwRPh7.png

http://i.imgur.com/LX4SrC0.png

Change-Id: Ib3d4c8361f5563729965fe140f379bd7393b4a0a