Merge branch '2.2-develop-prs' of github.com:magento-engcom/magento2ce into 2.2-develop-prs

Author: sivaschenko

app/code/Magento/Quote/Api/Data/CartInterface.php

@@ -223,14 +223,14 @@ public function setBillingAddress(\Magento\Quote\Api\Data\AddressInterface $bill
     /**
      * Returns the reserved order ID for the cart.
      *
-     * @return int|null Reserved order ID. Otherwise, null.
+     * @return string|null Reserved order ID. Otherwise, null.
      */
     public function getReservedOrderId();
 
     /**
      * Sets the reserved order ID for the cart.
      *
-     * @param int $reservedOrderId
+     * @param string $reservedOrderId
      * @return $this
      */
     public function setReservedOrderId($reservedOrderId);

app/design/frontend/Magento/luma/Magento_Theme/web/css/source/_module.less

@@ -151,6 +151,12 @@
         }
     }
 
+    .page-print {
+        .nav-toggle {
+            display: none;
+        }
+    }
+
     .page-main {
         > .page-title-wrapper {
             .page-title + .action {