http://knpbundles.com/ornicar/GravatarBundle http://symfony.com/doc/current/bundles/DoctrineMigrationsBundle/index.html http://symfony.com/doc/current/bundles/DoctrineFixturesBundle/index.html http://blog.viison.com/post/15619033835/symfony2-twig-extension-switch-locale-current-route