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/Authorization/ExpressionLanguage.php

@@ -0,0 +1,40 @@
+<?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\Authorization;
+
+use Psr\Cache\CacheItemPoolInterface;
+use Symfony\Component\ExpressionLanguage\ExpressionLanguage as BaseExpressionLanguage;
+
+if (!class_exists(BaseExpressionLanguage::class)) {
+    throw new \LogicException(\sprintf('The "%s" class requires the "ExpressionLanguage" component. Try running "composer require symfony/expression-language".', ExpressionLanguage::class));
+} else {
+    // Help opcache.preload discover always-needed symbols
+    class_exists(ExpressionLanguageProvider::class);
+
+    /**
+     * Adds some function to the default ExpressionLanguage.
+     *
+     * @author Fabien Potencier <fabien@symfony.com>
+     *
+     * @see ExpressionLanguageProvider
+     */
+    class ExpressionLanguage extends BaseExpressionLanguage
+    {
+        public function __construct(?CacheItemPoolInterface $cache = null, array $providers = [])
+        {
+            // prepend the default provider to let users override it easily
+            array_unshift($providers, new ExpressionLanguageProvider());
+
+            parent::__construct($cache, $providers);
+        }
+    }
+}