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/Authentication/RememberMe/PersistentTokenInterface.php

@@ -0,0 +1,48 @@
+<?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\Authentication\RememberMe;
+
+/**
+ * Interface to be implemented by persistent token classes (such as
+ * Doctrine entities representing a remember-me token).
+ *
+ * @author Johannes M. Schmitt <schmittjoh@gmail.com>
+ */
+interface PersistentTokenInterface
+{
+    /**
+     * Returns the class of the user.
+     */
+    public function getClass(): string;
+
+    /**
+     * Returns the series.
+     */
+    public function getSeries(): string;
+
+    /**
+     * Returns the token value.
+     */
+    public function getTokenValue(): string;
+
+    /**
+     * Returns the time the token was last used.
+     *
+     * Each call SHOULD return a new distinct DateTime instance.
+     */
+    public function getLastUsed(): \DateTime;
+
+    /**
+     * Returns the identifier used to authenticate (e.g. their email address or username).
+     */
+    public function getUserIdentifier(): string;
+}