API: CartPositions (#948)

doc/api/resources/index.rst

@@ -20,3 +20,4 @@ Resources and endpoints
    vouchers
    checkinlists
    waitinglist
+   carts

doc/api/resources/orders.rst

@@ -490,6 +490,9 @@ Order endpoints
      ``"n"`` for pending or ``"p"`` for paid. If you create a paid order, the ``order_paid`` signal will **not** be
      sent out to plugins and no email will be sent. If you want that behavior, create an unpaid order and then call
      the ``mark_paid`` API method.
+   * ``consume_carts`` (optional) – A list of cart IDs. All cart positions with these IDs will be deleted if the
+     order creation is successful. Any quotas that become free by this operation will be credited to your order
+     creation.
    * ``email``
    * ``locale``
    * ``payment_provider`` – The identifier of the payment provider set for this order. This needs to be an existing
@@ -580,11 +583,11 @@ Order endpoints
           {
             "positionid": 1,
             "item": 1,
-            "variation": None,
+            "variation": null,
             "price": "23.00",
             "attendee_name": "Peter",
-            "attendee_email": None,
-            "addon_to": None,
+            "attendee_email": null,
+            "addon_to": null,
             "answers": [
               {
                 "question": 1,
@@ -592,7 +595,7 @@ Order endpoints
                 "options": []
               }
             ],
-            "subevent": None
+            "subevent": null
           }
         ],
       }