Bug 21029: Make "Suspend until:" translatable

The label was part of the holds.js file. As .js files are never
translatable it needs to be moved to template level.

Test plan:
- Place a hold on an item
- Go to the patron account
- Click on the Suspend button on the holds tab
- View the modal, the label before the date field "Suspend until:" is
now translatable.

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>

koha-tmpl/intranet-tmpl/prog/en/includes/strings.inc

@@ -37,6 +37,7 @@
     var CANCEL = _("Cancel");
     var RESUME = _("Resume");
     var SUSPEND = _("Suspend");
+    var SUSPEND_UNTIL = _("Suspend until:");
     var SUSPEND_HOLD_ON = _("Suspend hold on");
     var CLEAR_DATE_TO_SUSPEND_INDEFINITELY = _("Clear date to suspend indefinitely");
     var SUSPEND_HOLD_ERROR_DATE = _("Unable to suspend hold, invalid date");

koha-tmpl/intranet-tmpl/prog/js/holds.js

@@ -241,7 +241,7 @@ $(document).ready(function() {
                 <div class='modal-body'>\
                     <input type='hidden' id='suspend-modal-reserve_id' name='reserve_id' />\
 \
-                    <label for='suspend-modal-until'>Suspend until:</label>\
+                    <label for='suspend-modal-until'>" + SUSPEND_UNTIL + "</label>\
                     <input name='suspend_until' id='suspend-modal-until' class='suspend-until' size='10' />\
 \
                     <p/><a class='btn btn-link' id='suspend-modal-clear-date' >" + CLEAR_DATE_TO_SUSPEND_INDEFINITELY + "</a></p>\