N°8771 - Add Symfony form component to iTop core (#760)

- Add Symfony Form Component
- Add Symfony CSRF security component
- Add iTop default form template
- Add Twig debug extension to Twig Environment
- Add iTop abstract controller facility to get form builder
- Add Twig filter to make trans an alias of dict_s filter

lib/symfony/security-core/User/InMemoryUserChecker.php

@@ -0,0 +1,45 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Security\Core\User;
+
+use Symfony\Component\Security\Core\Exception\DisabledException;
+
+/**
+ * Checks the state of the in-memory user account.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class InMemoryUserChecker implements UserCheckerInterface
+{
+    /**
+     * @return void
+     */
+    public function checkPreAuth(UserInterface $user)
+    {
+        if (!$user instanceof InMemoryUser) {
+            return;
+        }
+
+        if (!$user->isEnabled()) {
+            $ex = new DisabledException('User account is disabled.');
+            $ex->setUser($user);
+            throw $ex;
+        }
+    }
+
+    /**
+     * @return void
+     */
+    public function checkPostAuth(UserInterface $user)
+    {
+    }
+}