refactor: Basket template event -> send Order as parameter

src/QUI/ERP/Order/Controls/OrderProcess/Basket.html

@@ -2,11 +2,11 @@
     <h1>{locale group="quiqqer/order" var="ordering.step.title.Basket"}</h1>
 </header>
 
-{template_event name="quiqqer::order::orderProcessBasketBegin" Basket=$Basket}
+{template_event name="quiqqer::order::orderProcessBasketBegin" Basket=$Basket Order=$Order}
 
 {$BasketControl->create()}
 
-{template_event name="quiqqer::order::orderProcessBasketEnd" Basket=$Basket assign=content}
+{template_event name="quiqqer::order::orderProcessBasketEnd" Basket=$Basket Order=$Order assign=content}
 
 {if !empty($content)}
 <div class="quiqqer-order-basket-end">

src/QUI/ERP/Order/Controls/OrderProcess/Basket.php

@@ -163,6 +163,7 @@ public function getBody()
         $Engine->assign([
             'BasketControl' => $BasketControl,
             'Basket'        => $this->Basket,
+            'Order'         => $this->getAttribute('Order'),
             'this'          => $this
         ]);