Option to set notification icon opacity 1/2

Change-Id: If2f251b2187524b153a695977f3ee9ce5bf487db

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/StatusBarIconView.java
Merge branch 'pie-rebase' of https://github.com/UltimatumKang/android_frameworks_base into pie-rebase
FavoriteToggle: DismissKeyguard

Small Fix

PS2: Another Small Fix (insta-swag)

Change-Id: I8c854ef63b111ed702a42746f5ed22893620e1b7