sf4, repair errors and make basic and admin chill pages works

DependencyInjection/ChillMainExtension.php

@@ -144,7 +144,7 @@ class ChillMainExtension extends Extension implements PrependExtensionInterface,
                     'name' => $config['installation_name']),
                 'available_languages' => $config['available_languages']
             ),
-            'form_themes' => array('ChillMainBundle:Form:fields.html.twig')
+            'form_themes' => array('@ChillMain/Form/fields.html.twig')
         );
         $container->prependExtensionConfig('twig', $twigConfig);