show coupon codes in back office

core/lib/Thelia/Action/Order.php

@@ -30,6 +30,7 @@ use Thelia\Core\Event\Cart\CartEvent;
 use Thelia\Core\Event\Order\OrderAddressEvent;
 use Thelia\Core\Event\Order\OrderEvent;
 use Thelia\Core\Event\TheliaEvents;
+use Thelia\Coupon\CouponManager;
 use Thelia\Exception\TheliaProcessException;
 use Thelia\Model\AddressQuery;
 use Thelia\Model\ConfigQuery;
@@ -189,8 +190,6 @@ class Order extends BaseAction implements EventSubscriberInterface
             OrderStatusQuery::create()->findOneByCode(OrderStatus::CODE_NOT_PAID)->getId()
         );
 
-        /* refresh discount @todo */
-
         /* memorize discount */
         $placedOrder->setDiscount(
             $cart->getDiscount()
@@ -280,8 +279,6 @@ class Order extends BaseAction implements EventSubscriberInterface
             }
         }
 
-        /* memorize coupons @todo */
-
         $con->commit();
 
         $this->getDispatcher()->dispatch(TheliaEvents::ORDER_BEFORE_PAYMENT, new OrderEvent($placedOrder));