message: [hotfix] add csrf_token api endpoint
diff: @@ -1400,6 +1400,15 @@ class Superset(BaseSupersetView):
  return json_success(
  json.dumps(payload, default=utils.json_int_dttm_ser))
  + @api
  + @has_access_api
  + @expose("/csrf_token/", methods=['GET'])
  + def csrf_token(self):
  + return Response(
  + self.render_template('superset/csrf_token.json'),
  + mimetype='text/json',
  + )
  +
  @api
  @has_access_api
  @expose("/fave_dashboards/<user_id>/", methods=['GET'])
  