systemUI: add swipe QS to Notifications and back

Change-Id: I95aaa4fa1b0e8f74537e48936fe2c0f9f15671dd

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java