Notification should contain more information on ICS devices

With, e.g. email apps, the standard notification will say something like "4 new emails". But if there is only one, or if you swipe down on the notification, it will show more rich information, such as the contents of the email.

It would be good if, on devices that allowed it, you could swipe the notification for "x updates available" to see the actual apps which can be updated, perhaps with version numbers.

For further discussion, see the issue on the old issue tracker: https://f-droid.org/repository/issues/?do=view_issue&issue=252