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

Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java