Display shared collections in the groupviews blocktype (Bug 1320006)

and
- add pagination for the shared collection list
- remove shared pages in collections from the shared page list
- add the settings 'Display shared collections' and 'Entries per page'
to the blocktype configure for groupviews

- fix the duplicates in the shared page list

Change-Id: I4c0e8c49cfe363f28a377b120b629d0d5170a243
Signed-off-by: Son Nguyen <son.nguyen@catalyst.net.nz>
Add pagination to the submission list in group homepage (Bug 1321941)

also add the option 'Display submitted pages and collections' into the
groupview block configuration.

Change-Id: Ied96d51d0488ffe1bdfbbacf558778a6c585788d
Signed-off-by: Son Nguyen <son.nguyen@catalyst.net.nz>
Merge changes Ied96d51d,I4c0e8c49

* changes:
  Add pagination to the submission list in group homepage (Bug 1321941)
  Display shared collections in the groupviews blocktype (Bug 1320006)