deform: fixed selecting of default values for select2 widget.

rhodecode/templates/forms/select2.pt

@@ -21,7 +21,7 b''
                 tal:attributes="label item.label">
         <option tal:repeat="(value, description) item.options"
                 tal:attributes="
-                selected (multiple and value in list(map(unicode, cstruct)) or value == list(map(unicode, cstruct))) and 'selected';
+                selected python:field.widget.get_select_value(cstruct, value);
                 class css_class;
                 label field.widget.long_label_generator and description;
                 value value"
@@ -29,7 +29,7 b''
       </optgroup>
       <option tal:condition="not isinstance(item, optgroup_class)"
               tal:attributes="
-              selected (multiple and item[0] in list(map(unicode, cstruct)) or item[0] == unicode(cstruct)) and 'selected';
+              selected python:field.widget.get_select_value(cstruct, item[0]);
               class css_class;
               value item[0]">${item[1]}</option>
     </tal:loop>
@@ -37,7 +37,7 b''
 
   <script type="text/javascript">
    deform.addCallback(
-     '${field.oid}',
+     '${oid}',
      function(oid) {
        $('#' + oid).select2({
          containerCssClass: 'form-control drop-menu',