Bug 26626: Add 'Ignore' option to confirmed holds modal

This patch adds 'Ignore' to the 'Hold already waiting' modal

To test:
To recreate:
 1 - Place a hold for pickup at library A
 2 - Checkin the item at Library A
 3 - Note the modal has 'Ignore' option
 4 - Click it, nothing happens
 5 - Check in the item again, same modal
 6 - Click 'Confirm'
 7 - Check in the item again
 8 - Now 'Ignore' is replaced by 'Cancel'
 9 - Click 'Confirm' to dismiss modal
10 - Apply patch
11 - Check the item in again
12 - Note 'Ignore' button before 'Cancel' button with '-' icon
13 - Go to biblio holds page
14 - Revert waiting status
15 - Check item in again
16 - Note ignore now has '-' (minus) icon

Signed-off-by: Barbara Johnson <barbara.johnson@bedfordtx.gov>

Signed-off-by: Joonas Kylmälä <joonas.kylmala@iki.fi>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
(cherry picked from commit 5e8da26195)

Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>
(cherry picked from commit 9997adba1e)
Signed-off-by: Arthur Suzuki <arthur.suzuki@biblibre.com>

koha-tmpl/intranet-tmpl/prog/en/modules/circ/returns.tt

@@ -553,6 +553,9 @@
                                                     <button type="button" class="btn btn-default print" accesskey="P">
                                                         <i class="fa fa-print"></i> Print slip and confirm (P)
                                                     </button>
+                                                    <button data-dismiss="modal" aria-hidden="true" type="submit" class="btn btn-default deny">
+                                                        <i class="fa fa-minus"></i> Ignore
+                                                    </button>
 
                                                     <button type="button" class="btn btn-default deny cancel-hold" accesskey="X">
                                                         <i class="fa fa-times"></i> Cancel hold (X)