Show live wallpapers in the recents view

Change-Id: Iefbf4f292b6a9bfdb516f154cc2976db2ba86cde
PhoneWindowManager: add ability to use EdgeGestureService for system gestures.

Update: Default to enabled

Change-Id: Id4e2c0d82f771cd1c20e9196fb6db347494cca69

Conflicts:
	core/java/android/provider/Settings.java
	policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
	services/java/com/android/server/gesture/EdgeGestureTracker.java
core: add support for translucent volume panel

Add support for display the volume panel in translucent mode

Change-Id: I4f21a6cc88282789072a0e71ae696b754a5e083e
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>