Badge notification from managed profiles.

Add a method to the UserManager to provide access
to bitmap of badge for managed profile.
Overlay the icon view in notification templates with
the badge from the UserManager.
Notifications with custom views won't be badged.

Bug: 12641490

Change-Id: I1f2aae927e75fc8a955e4d5bbc3cc81127d87069
(cherry picked from commit 0f4ab980227e8c298bfcd34dd85aad0febad528c)