Fixed #414. If filter has options set, ignore Select2 wrapper in client-side code

flask_admin/static/admin/js/filters.js

@@ -10,7 +10,8 @@ var AdminFilters = function(element, filters_element, operations, options, types
 
     function changeOperation() {
         var $row = $(this).closest('tr');
-        var $el = $('.filter-val', $row);
+        var $el = $('.filter-val:input', $row);
+        console.log($el);
         var count = getCount($el.attr('name'));
         $el.attr('name', 'flt' + count + '_' + $(this).val());
         $('button', $root).show();