Frameworks: add ability to change the color in battery saver mode (1/2)

User complain about the ugly orange....give the user the ability to change the
color in status and navigation bar if battery saver mode is activated.

Especially for you Tylog :D

PS
- move it into the observer...method is called to often to call every time
  the settings value for it.
Frameworks: Gesture Lockscreen (1/2)

This adds the ability to us a hand drawn gesture as
a means to unlock the device.

In the case that the gesture is forgotton or not
being recognized correctly, the fallback will be the
same as when using patterns.

Androidx:
Some changes needed for 5.0

@alviteri: crDroid'fy

(cherry picked from commit a1a9db0ce13da0ede769e76ae4332d06c9a556d7)
FWB: Gesture Anywhere - bring it back [1/2]

AICPfy lp5.0:
- Lollipopify LOL
- By request from doc
- Added TriggerOverlayView from AppSidebar
- some lines from Locskcreen gestures to get
  it compiled and working

Change-Id: I04acb9a88fe0011921a1bafdc1919d76ce57aedf
(cherry picked from commit ccca76f5b82a7d6485128e2fb894fa5284c551b5)