Settings: Pimp up Notification Labels Hide [1/2]

This adds fine grain priorities to hide the labels in the notification
drawer in the following ways:

- Show all Labels
- Hide Carrier Label
- Hide WiFI Lable
- Hide all Labels

PS:
- rebase

Change-Id: I7ca279575b7a26fb87d2e966160d895e169d6e92

Conflicts:
	res/values/slim_arrays.xml