Return: Smart Pulldown [2/2]

Adds the ability to directly open the QS panel when there are
no notifications present in the notification panel.
This commit combines the enhancement by HardCorePawn for detectin
notification types for the same.

Credits: kufikugel, HardCorePawn

Change-Id: I0a6526f8367bdf86a5216c5be0f140c80b1386d9

Conflicts:
	res/values/slim_arrays.xml
	res/values/slim_strings.xml
	res/xml/notification_drawer_qs_settings.xml
	src/com/android/settings/slim/NotificationDrawerQsSettings.java