Merge "Remove possible leak when exception occurred."
HALO bugfixes

- couple of problems with concurrent threads
- green batch only for nap
- italics gone
- mdpi and & hdpi icons
- statusbar-icon gaps
- flipping batch when content changes
- batch fadeout without flip
- code style

Change-Id: Idfb145eb8e220bf224dd3d0e235e3647dcc82ed9

Conflicts:
	packages/SystemUI/res/drawable-xhdpi/halo_pinned_app.png
	packages/SystemUI/res/drawable-xhdpi/halo_system_message.png
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
HALO bugfixes fix cherry-pick
HALO persistent notifications less pronounced + fixes

Change-Id: Ib485468303dfd7ca7fea17d7c755a3ee4e075940