[2/2] Prepare NotificationManagerService for new format

* Needed for blacklisting

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>
[2/2] Add support for Peek app

Disable built in peek when Peek app is installed. Enable it again on app's unistall.

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>
Merge remote-tracking branch 'upstream/kitkat'

Conflicts:
	src/com/android/settings/DisplaySettings.java
	src/com/android/settings/applications/InstalledAppDetails.java

Change-Id: I3fcc7223478562926d12d3ca9febf5cbda398a37