QS: do not show ringer options on devices which do not support vibrate

if a device like grouper does not support vibration it does not make
sense to show the settings dialog for it due that this devices just
can switch between sound/mute

Change-Id: Ie5b188fd69376d11874ae6c2b541948d2434fd66
QS: use vibrator check from DeviceUtils

Change-Id: I40677ce94884ef6e91e7680af703c36b0d2e14c7
settings: fix quickpulldown summary and clean up code

on default value it showed left summary and code is to complicated

Change-Id: I0c3b2dbe3213beea707bdda2f2453c4f9c75dcae

Conflicts:
	res/values/slim_strings.xml