Floating Window: Welcome back
* Port squashed jellybean floating window to kitkat.

Floating window contributors:
@drcmda
@beerbong
@D4rKn3sSyS

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>

Merge notification manager service changes.

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>

Conflicts:

	services/java/com/android/server/NotificationManagerService.java
HALO: make windows moveable and scaleable [WIP]

Change-Id: I8c3118f6d548dc70f186454fb8d15a4bae9bbeb0

Conflicts:

	core/java/android/app/Activity.java

Conflicts:

	core/java/android/app/Activity.java