MultiWindow: halo launcher

Makes a new imageview from the app icon to triger the event
TODO: handle moving and passing touches

Change-Id: I3bf5e7673f233b9c6b9c8cca0ebd0ecb3174dc7e

Conflicts:

	packages/SystemUI/AndroidManifest.xml
	packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java