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: I5a1fbe0867dfdc06892524845fabf6e763518268
Signed-off-by: Scott <scott@ubuntu>

Conflicts:
	res/values/bs_arrays.xml
	res/values/bs_strings.xml