Bug 4912: Redirect to the appropriate view after editing/deleting a list

 Bug 4912: Redirect to the appropriate view after editing/deleting a list

There are 2 places where a list can be edited/deleted: on the list view
and the list content view. After the edition, the user expect to be
redirect to the previous page.
This patch implements that.

Test plan:
At the OPAC, delete and edit a list from the 2 differents places.
Confirm that you are redirect to the page you come from.

With patch, redirects work as expected.
Signed-off-by: Marc Véron <veron@veron.ch>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Brendan A Gallagher <brendan@bywatersolutions.com>