CellBroadcastReceiver: More kitkat ActionBar fixes

Theme CellBroadcastListActivity

Change-Id: I43bfaceef28492b58aa57c6040f4dff1ef26baf9
CellBroadcastReceiver: Update ActionBar to match Settings

Even though CellBroadcastReceiver is a seperate app, it is accessed
directly in the Settings app and has an action bar style different to
all the screens in the Settings app.

Change-Id: I8e8b8bd0fa7094b159d68bd1a4ec269821480764