Kill floating activities running in the same thread when tapping outside

This change makes all activities from the same app to be finished when we tap outside the halo window. Other apps running in different threads
(floating or not) won't be finished.

Port from here: https://github.com/ParanoidAndroid/android_frameworks_base/commit/f489f45ab2ba5dd4991c241917f7f4b0fd74b884

Change-Id: Ie6d6f46b2e23be60f991520ed480c2866fb2d0e3
Launch floating notifications from notification panel (long click)

 * Status bar - long click on notification select 'floating mode' option

fix derp in floating notification launch

Notification long press fix

Conflicts:
	packages/SystemUI/res/menu/notification_popup_menu.xml
	packages/SystemUI/res/values/pa_strings.xml
	packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java