Halo: Add master switch to disable Halo (1/2)
-Port master switch from @Der-Schubi.
-Fixed Halo not showed at first notifiction pulldown.

Signed-off-by: iceandfire <arhamjamal@gmail.com>

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java

Change-Id: I5ba0e96f33eaa412419eb21bfe2ef9d4293499a2
Merge branch 'kitkat' of https://github.com/TeamHorizon/platform_frameworks_base into kitkat