use i18n propel behavior instead of manual model for traduction

core/lib/Thelia/Model/ContentI18nQuery.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace Thelia\Model;
+
+use Thelia\Model\om\BaseContentI18nQuery;
+
+
+/**
+ * Skeleton subclass for performing query and update operations on the 'content_i18n' table.
+ *
+ *
+ *
+ * You should add additional methods to this class to meet the
+ * application requirements.  This class will only be generated as
+ * long as it does not already exist in the output directory.
+ *
+ * @package    propel.generator.Thelia.Model
+ */
+class ContentI18nQuery extends BaseContentI18nQuery
+{
+}