Merge branch '2.3' into 2.7

* 2.3:
  [Form] [Validator] Fix locale inconsistencies in Norwegian translations
  fixed CS
  [DependencyInjection] fixed exceptions thrown by get method of ContainerBuilder
  [Form] remove useless code in ResizeFormListener

Author: fabpot

Extension/Core/EventListener/ResizeFormListener.php

@@ -102,10 +102,6 @@ public function preSubmit(FormEvent $event)
         $form = $event->getForm();
         $data = $event->getData();
 
-        if (null === $data || '' === $data) {
-            $data = array();
-        }
-
         if (!is_array($data) && !($data instanceof \Traversable && $data instanceof \ArrayAccess)) {
             $data = array();
         }