Active Display: Catch possible NPE during handleDismissNotification()

[log]

* AD doesn't register if notification has been cleared on different device
  (computer) so catch the NPE that would ensue

Change-Id: Ibdb7f526d2c709ebf7a888de717247b7a6114e3e
Fix ste audio problem

Change-Id: I38b10a946ae4fe08df8dbfd0d034bd61e452a574
AppWindow: performance and memory improvements

- create views when showing the AppWindow and mNeedsUpdate is true
- don't recreate views with each app install/update/removal
- remove all views before creating a new instance

Change-Id: Iedf573b77787bacf88d6d0a4a2ff09568dfb43f0
Signed-off-by: Dirk Rettschlag <dirk.rettschlag@gmail.com>
Merge branch 'jellybean' of github.com:BAM-Team/android_frameworks_base into jellybean