Bug 10714: Redirect to list contents view upon save after initiating edit from list contents view (staff)

In the staff client, if you initiate a list edit from the list contents
view you should be redirected to that same view after saving your
changes. The OPAC already works this way.

To test, view the contents of an existing list. Click the "Edit list"
item under the "Edit" menu. Click save on the list edit form and you
should be redirected back to the contents view of that list.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>
Bug 10714 [Follow-up] Redirect to list contents view upon cancel after initiating edit from list contents view (staff)

This follow-up corrects the "cancel" action on list edit actions based
on whether the edit was initiated from the list of lists or the list
contents view.

To test, view the list of lists and click the edit link next to one of
them. Click the cancel link. You should return to the list of lists you
were just viewing.

View the contents of a list. Choose "Edit list" from the edit menu.
Click the cancel link on the edit screen. You should return to the list
contents view from which you initiated the edit action.

Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>