-def _edit_question(request, question, template='question_edit.html', summary='', action_class=ReviseAction, allow_rollback=True, url_getter=lambda q: q.get_absolute_url()):
+def _edit_question(request, question, template='question_edit.html', summary='', action_class=ReviseAction,
+ allow_rollback=True, url_getter=lambda q: q.get_absolute_url(), additional_context=None):