* 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/Test/NodeTestCase.php

@@ -1,11 +1,60 @@
 <?php
 
-namespace Twig\Test;
+/*
+ * This file is part of Twig.
+ *
+ * (c) Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+abstract class Twig_Test_NodeTestCase extends PHPUnit_Framework_TestCase
+{
+    abstract public function getTests();
 
-class_exists('Twig_Test_NodeTestCase');
-
-if (\false) {
-    class NodeTestCase extends \Twig_Test_NodeTestCase
+    /**
+     * @dataProvider getTests
+     */
+    public function testCompile($node, $source, $environment = null)
     {
+        $this->assertNodeCompilation($source, $node, $environment);
+    }
+
+    public function assertNodeCompilation($source, Twig_Node $node, Twig_Environment $environment = null)
+    {
+        $compiler = $this->getCompiler($environment);
+        $compiler->compile($node);
+
+        $this->assertEquals($source, trim($compiler->getSource()));
+    }
+
+    protected function getCompiler(Twig_Environment $environment = null)
+    {
+        return new Twig_Compiler(null === $environment ? $this->getEnvironment() : $environment);
+    }
+
+    protected function getEnvironment()
+    {
+        return new Twig_Environment();
+    }
+
+    protected function getVariableGetter($name, $line = false)
+    {
+        $line = $line > 0 ? "// line {$line}\n" : '';
+
+        if (PHP_VERSION_ID >= 50400) {
+            return sprintf('%s(isset($context["%s"]) ? $context["%s"] : null)', $line, $name, $name);
+        }
+
+        return sprintf('%s$this->getContext($context, "%s")', $line, $name);
+    }
+
+    protected function getAttributeGetter()
+    {
+        if (function_exists('twig_template_get_attributes')) {
+            return 'twig_template_get_attributes($this, ';
+        }
+
+        return '$this->getAttribute(';
     }
 }