Settings : Quick settings/Ribbons (Squashed commit)

Port forward settings for quicksettings/ribbons

Patchset 7: Point to more fitting drawables (blunden)

Change-Id: I2d4659337f48338547a4e6c1efb8b32122319fe3

Add back preference for drawer collapse behaviour

Change-Id: Ic6fa8531f9119447853e2dd3fa033924f0d37091

Conflicts:
	res/values/cm_strings.xml
	res/xml/settings_headers.xml