Bug 37150: Can't delete single title from a list using the "Remove from list" link

Bug 37150: Can't delete single title from a list using the "Remove from list" link

In the OPAC display of titles on a list, the "Remove from list" control
needs to trigger a POST operation instead of GET. This patch
appends a form for handling single entry deletions, populating
the hidden input upon confirmation.

To test, apply the patch and create a list if necessary, adding multiple
titles to it.

- View the contents of your list.
- Each title on your list should have a "Remove from this list" link.
  - Click one of these. You should see a modal confirmation, "Are you
    sure you want to remove this item from the list?"
    - Confirming should delete the title form the list.
  - Check multiple checkboxes in the list of titles and click "Remove
    from list" at the top of the list.
    - You should see a modal confirmation, "Are you sure you want to
      remove these items from the list?"
      - Confirming should result in all checked titles being removed
        from the list.
  - Check one or more checkboxes and then click a single "Remove from
    list" link. After confirming, you should find that only the one
    title was removed from the list.

Sponsored-by: Athens County Public Libraries
Signed-off-by: Eric Garcia <cubingguy714@gmail.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>