Create gender admin entity and add configuration to use it

entity, migration, controller, repository, templates, form added

src/Bundle/ChillMainBundle/Repository/GenderRepository.php

@@ -0,0 +1,7 @@
+<?php
+
+namespace Chill\MainBundle\Repository;
+
+use Doctrine\ORM\EntityRepository;
+
+class GenderRepository extends EntityRepository {}