Merge branch '2.7' into 2.8

* 2.7:
  [Console] SymfonyStyle : Fix blocks wordwrapping
  [Console] SymfonyStyle : Fix blocks output is broken on windows cmd
  [Validator] remove partial deprecation annotation
  Updated UPGRADE-2.4.md
  [Form] Support DateTimeImmutable in transform()
  Show the FormType and FormTypeExtension in case of deprecated use of setDefaultOptions
  [FrameworkBundle] Document form.csrf_provider service deprecation
  [Form] add test to avoid regression of #14891
  without this change allways the legacy code get called
  [Form] Fix call to removed method (BC broken in 2.3)
  Fix ask and askHidden methods
  [HttpFoundation] Get response content as resource several times for PHP >= 5.6
  Change error message to reflect SecurityContext deprecation.
  fixed merge
  Issue #14815
  [Console] SymfonyStyle : fix & automate block gaps.
  [Console] SymfonyStyle : Improve EOL consistency by relying on output instance
  Improved duplicated code in FileLocator

Author: fabpot

Http/Firewall/AccessListener.php

@@ -50,7 +50,7 @@ public function __construct(TokenStorageInterface $tokenStorage, AccessDecisionM
     public function handle(GetResponseEvent $event)
     {
         if (null === $token = $this->tokenStorage->getToken()) {
-            throw new AuthenticationCredentialsNotFoundException('A Token was not found in the SecurityContext.');
+            throw new AuthenticationCredentialsNotFoundException('A Token was not found in the TokenStorage.');
         }
 
         $request = $event->getRequest();