Bug 24390: Add item total to rotating collections

Bug 24390: Add item total to rotating collections

Displays the number of items in a rotating collection.

TEST PLAN:
1. Set up some rotating collections and add some items to them.
2. No good way to see how many total items are in a given collection.
3. Apply patch
4. Look at collections again and you should see 'Total Items: X'
5. Make sure it is counting the total number of items correctly.

Signed-off-by: Jessica Zairo <jzairo@bywatersolutions.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>