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

Change-Id: I93b59da79c63c3154bec1dba4490e4f4447a1564
Fix in SystemUI force closing when Active display is enable

Change-Id: I7b8ed2318049a7942d743812f32ef68346c43cfb