halo, bugfixes

1. fixed size for content
2. flip animations for tasking only
3. batch size calculations
4. not a bug but pinned and system both get the same icon for now

Change-Id: I755cd4e88c909ab8b982e014d470791661a0041e

Conflicts:

	packages/SystemUI/src/com/android/systemui/statusbar/halo/HaloProperties.java