Bug 23678: Allow cancel holds in bulk

Bug 23678: Allow cancel holds in bulk

This patch allows staff patrons to cancel multiple holds in bulk.

To test:
1. Apply this patch
2. restart_all
3. In cataloge go to a book and place many holds
CHECK => Holds table shows a column of checkboxes
4. Play with checkboxes (have some fun ;-P)
CHECK => When you manually check all checkboxes, the checkbox in the
header also gets checked.
      => When you uncheck one of the checkboxes, the one in the header also gets unchecked.
      => If no checkbox is checked and you check the one in the header,
all checkboxes get checked.
      => If there are some checkboxes that are checked and others are
not, when you click on the checkbox in the header all checkboxes get
unchecked.
      => If all checkboxes are checked, when you uncheck the one in the
header, all checkboxes get unchecked.
      => Every time you play with checkboxes, the number in the button
"Cancel selected" changes.
5. Check some of the checkboxes and click on cancel selected.
SUCCESS => A background job gets fired to cancel all selected holds.
        => A message should appear with a link to the job.
6. Wait a few seconds and click on the link
SUCCESS => A message appears with the report of the execution of the
background job.
7. Grab a patron and search to hold
8. Select multiple biblios and click on "place hold for <patron>"
CHECK => After holds are confirmed, multiple holds table are shown.. one for
   each record. Checkboxes work exactly the same as before, but scoped
for each individual table. Checkboxes from one table will not affect
checkboxes from other tables.
9. Repeat steps 4 to 6.
10. Check In some of the items so the get in Waiting state.
11. Update expirationdate os some of those holds and set it to
    ReservesMaxPickUpDelay + 1 days earlier
NOTE => ReservesMaxPickUpDelay = 7 days by default, so sql syntax to update would be
     => update reserves set expirationdate = date_sub(expirationdate, interval 8 day) where reserve_id in (...)
12. Repeat steps 4 to 6 but in waitingreserves.pl, in both tabs.

Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Bug 23678: (QA follow-up) Add missing template filter

Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Bug 23678: (QA follow-up) Add missing filters

Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Bug 23678: (QA follow-up) Use correct indentation

Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
JD amended patch: also Koha/BackgroundJob/BatchCancelHold.pm

JD Amended patch: Full rebase and adjustements made on top of bug 26080.

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>