Status bar brightness control

+ added some fixes to original implementation (thanks mostly cm for that)
+ add multiuser support

Change-Id: I108086b07dea9cc6d59bfbdd9652b3aa33dcfe74

Conflicts:
	res/values/slim_strings.xml
settings: add back notification shortcuts + slim classes we need

this will add back slims notification shorcuts feature as well
we add common slim classes we use for navbar navring pie etc
see fb commit for more details

Change-Id: I798d6597a8894fa47718fa6310b7965239130a3a

Conflicts:
	res/values/cm_strings.xml
	res/values/slim_arrays.xml
	res/xml/notification_drawer_settings.xml