[backend] Cron process orders

backend/controllers/CronController.php

@@ -272,7 +272,7 @@ class CronController extends BackendController
                                                         Yii::$app->mailer->compose()
                                                                 ->setFrom('contact@opendistrib.net')
                                                                 ->setTo('contact@opendistrib.net')
-                                                                ->setSubject('[Opendistrib] Log cron')
+                                                                ->setSubject('[Opendistrib] Log '.$producer->name)
                                                                 ->setTextBody($messageLog)
                                                                 ->send();