Bug 16043 - Use Font Awesome icon in hold confirmation dialog

This patch fixes another instance in the checkin template where a Font
Awesome icon should be used instead of a background image.

To test, apply the patch and locate an item which is on hold for a
patron at your logged in library.

- Check in the item.
- Confirm the hold.
- Check in the item again.
  - You should get a "Hold found (item is already waiting)" message. The
    "Print and confirm" button in this dialog should have a Font Awesome
    icon.
  - Confirm that the print button still works correctly.

Followed test plan, works as expected.
Signed-off-by: Marc Véron <veron@veron.ch>

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

Signed-off-by: Brendan A Gallagher <brendan@bywatersolutions.com>

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

@@ -251,7 +251,7 @@ $(document).ready(function () {
             <button type="submit" class="deny" onclick="this.form.cancel_reserve.value = 1; this.form.submit();"><i class="fa fa-times"></i> Cancel</button>
 
             <input type="hidden" name="print_slip" value="0" />
-            <input type="submit" value="Print and confirm" class="print" onclick="this.form.print_slip.value = 1; this.form.submit();" />
+            <button type="submit" class="print" onclick="this.form.print_slip.value = 1; this.form.submit();"><i class="fa fa-print"></i> Print and confirm</button>
             [% FOREACH inputloo IN inputloop %]
                 <input type="hidden" name="ri-[% inputloo.counter %]" value="[% inputloo.barcode %]" />
                 <input type="hidden" name="dd-[% inputloo.counter %]" value="[% inputloo.duedate %]" />