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>