Add CRUD for site credentials

src/Wallabag/CoreBundle/Repository/SiteCredentialRepository.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace Wallabag\CoreBundle\Repository;
+
+/**
+ * SiteCredentialRepository.
+ *
+ * This class was generated by the Doctrine ORM. Add your own custom
+ * repository methods below.
+ */
+class SiteCredentialRepository extends \Doctrine\ORM\EntityRepository
+{
+}