sf4 resolve errors and depreciations

Templating/CSVCellTwig.php

@@ -22,13 +22,16 @@
 
 namespace Chill\MainBundle\Templating;
 
+use Twig\Extension\AbstractExtension;
+use Twig\TwigFilter;
+
 /**
  * Twig filter to transform a string in a safer way to be the content of a csv
  * cell.
  * 
  * This filter replace the char " by ""
  */
-class CSVCellTwig extends \Twig_Extension
+class CSVCellTwig extends AbstractExtension
 {
     /*
      * Returns a list of filters to add to the existing list.
@@ -39,7 +42,7 @@ class CSVCellTwig extends \Twig_Extension
     public function getFilters()
     {
         return array(
-            new \Twig_SimpleFilter(
+            new TwigFilter(
                 'csv_cell',
                 array($this, 'csvCellFilter'),
                 array('is_safe' => array('html')))