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

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>