Forwards port:Double tap to sleep on navigation bar [1/2]

Screw'd:
Augmented to work with Screw'd AOSP

Change-Id: I0ed91c8664fc2e52693114aa1a2b1bdc5bee0b0f
Forward port:Gesture Lockscreen [1/2]

Screw'd:
Augmented for Screw'd AOSP
Ported to 5.0.1

Change-Id: I370d40d47459d64adf709d4caee1c27c75922cfd