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/UserInterface.php

@@ -0,0 +1,61 @@
+<?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;
+
+/**
+ * Represents the interface that all user classes must implement.
+ *
+ * This interface is useful because the authentication layer can deal with
+ * the object through its lifecycle, assigning roles and so on.
+ *
+ * Regardless of how your users are loaded or where they come from (a database,
+ * configuration, web service, etc.), you will have a class that implements
+ * this interface. Objects that implement this interface are created and
+ * loaded by different objects that implement UserProviderInterface.
+ *
+ * @see UserProviderInterface
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+interface UserInterface
+{
+    /**
+     * Returns the roles granted to the user.
+     *
+     *     public function getRoles()
+     *     {
+     *         return ['ROLE_USER'];
+     *     }
+     *
+     * Alternatively, the roles might be stored in a ``roles`` property,
+     * and populated in any number of different ways when the user object
+     * is created.
+     *
+     * @return string[]
+     */
+    public function getRoles(): array;
+
+    /**
+     * Removes sensitive data from the user.
+     *
+     * This is important if, at any given point, sensitive information like
+     * the plain-text password is stored on this object.
+     *
+     * @return void
+     */
+    public function eraseCredentials();
+
+    /**
+     * Returns the identifier for this user (e.g. username or email address).
+     */
+    public function getUserIdentifier(): string;
+}