* some changes

* moved some admin html code from php to twig templates (.html files)
* minimum PHP version required by installer is now 5.1.2, cause of spl_autoload_register functon.
* depracated Twig to version 1.20.0 cause of Autoloader
* removed unused admin stylish template

system/libs/twig/Sandbox/SecurityPolicyInterface.php

@@ -1,11 +1,24 @@
 <?php
 
-namespace Twig\Sandbox;
+/*
+ * This file is part of Twig.
+ *
+ * (c) 2009 Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
 
-class_exists('Twig_Sandbox_SecurityPolicyInterface');
+/**
+ * Interfaces that all security policy classes must implements.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+interface Twig_Sandbox_SecurityPolicyInterface
+{
+    public function checkSecurity($tags, $filters, $functions);
 
-if (\false) {
-    interface SecurityPolicyInterface extends \Twig_Sandbox_SecurityPolicyInterface
-    {
-    }
+    public function checkMethodAllowed($obj, $method);
+
+    public function checkPropertyAllowed($obj, $method);
 }