HOVER: Add QS Tile [1/2]

Change-Id: I73b41f80762cb71fa86630314891e9670b43ea87

Conflicts:
	core/java/com/android/internal/util/liquid/QSConstants.java
	packages/SystemUI/res/values/liquid_strings.xml
	packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickSettingsController.java

Conflicts:
	core/java/com/android/internal/util/slim/QSConstants.java
	packages/SystemUI/res/values/slim_strings.xml
	packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickSettingsController.java
HOVER: Option to exclude topmost app [1/2]

Originally taken from Tigger2014:
https://github.com/Tigger2014/android_frameworks_base-1/commit/5af0e1c84e86e9b4e6947163aaf58e9ab541079d

Change-Id: I6da9027af4c7bc74945a06b97b876f94cf817844

Conflicts:
	core/java/android/provider/Settings.java