settings: slim classes we need

we add common slim classes we use for navbar navring pie etc
see fb commit for more details

Change-Id: I798d6597a8894fa47718fa6310b7965239130a3a

Conflicts:
	res/values/slim_arrays.xml
	res/values/slim_strings.xml
	res/xml/slim_navigation_settings.xml
	src/com/android/settings/slim/dslv/ButtonsListViewSettings.java
	src/com/android/settings/slim/fragments/NotificationsShortcutFragment.java