Allow notification expansion if multiple calls were missed or
blacklisted.

The expanded notification shows a list of the missed/blacklisted calls (up to 6) in
that case.

Change-Id: I63db3eb6e773119a0bf8c0c430fcaa6f32d5e6f2
Signed-off-by: ChampionSwimmer <android@championswimmer.tk>

Conflicts:

	src/com/android/phone/NotificationMgr.java