[1/2] FW: Swipe to switch

Adds the ability to switch to/from Quick Settings, using a sideways
swipe gesture.
You can turn on or off this feature in RC.
Also includes this patch - http://review.cyanogenmod.org/#/c/30867/

Video demonstration: http://www.youtube.com/watch?v=jZaDVBIFAuA
(Video for the initial Patch Set only)

Change-Id: I930673565f2535a0a0058e1d4ff8b5fccf74c251