Bug 20148: Prevent adding same user multiple times to an order

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

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

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
(cherry picked from commit 802c81ce1a)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>

koha-tmpl/intranet-tmpl/prog/en/modules/acqui/neworderempty.tt

@@ -177,7 +177,7 @@ $(document).ready(function()
         } else {
             ids = new Array;
         }
-        if (ids.indexOf(borrowernumber) < 0) {
+        if (ids.indexOf(borrowernumber.toString()) < 0) {
             ids.push(borrowernumber);
             $("#users_ids").val(ids.join(':'));
             var li = '<li id="user_'+borrowernumber+'">'+borrowername