public function actionShowUpdateProgress($curr_step)
 {
     $model = new Setup();
     //echo "step value in controller ".$curr_step;
     $step = $curr_step;
     if ($step != 0) {
         $step_info = $model->updateVersion($step);
     } else {
         session_unset();
     }
     $this->renderPartial('showUpdateProgress', array('step_info' => $step_info));
 }