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
	src/com/android/settings/vanir/StatusBar.java
quick QS array for left/right/off

also moved it to statusbar.java & quicksettings menu finally

Adjusted for 4.4 also fix a string

Change-Id: Ie93be18f857ef3fab918b23b3fb0de8ac9d680a8

Conflicts:
	res/values/strings.xml
	res/xml/display_settings.xml
	res/xml/prefs_statusbar.xml
	src/com/android/settings/DisplaySettings.java
	src/com/android/settings/vanir/fragments/Statusbar.java