Settings: Don't crash if we pause too quickly

Notifier is unregistered in every case in pause.
However, if you close the Settings app too quick, the notifier
might not be registered at all, causing an IllegalArgumentException
during the unregistering.

Change-Id: I54141cbfc91d08c28ef524f4155b673ae8dee90e
Status bar brightness control

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

Change-Id: I108086b07dea9cc6d59bfbdd9652b3aa33dcfe74
[2/3]TeloRadio packages_apps_Settings
	* List of settings
		> Enable manager
		> Use LTE
		> 2G with Wi-Fi
		> 2G with screen off
		> 3G to unlock
Custom lockscreen wallpaper [2/2]

Based on commit of ParanoidAndroid on android 4.3
up
upstream