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/PasswordUpgraderInterface.php

@@ -0,0 +1,27 @@
+<?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;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+interface PasswordUpgraderInterface
+{
+    /**
+     * Upgrades the hashed password of a user, typically for using a better hash algorithm.
+     *
+     * This method should persist the new password in the user storage and update the $user object accordingly.
+     * Because you don't want your users not being able to log in, this method should be opportunistic:
+     * it's fine if it does nothing or if it fails without throwing any exception.
+     */
+    public function upgradePassword(PasswordAuthenticatedUserInterface $user, string $newHashedPassword): void;
+}