Add reboot tile to QS (1/2 )WIP

- Still need to colapse expanded status bar and show reboot message

Ported, with some adaptations, form Slim Roms

Change-Id: Iabed00f7697fe89fedb9904a69b7dea25efc3c7d

Conflicts:
	core/java/com/android/internal/util/cm/QSConstants.java
	packages/SystemUI/res/values/cm_strings.xml
	packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickSettingsController.java
	packages/SystemUI/src/com/android/systemui/statusbar/powerwidget/PowerButton.java