Symfony2 upgrade to v2.3.4 LTS
composer.lock added to git
step 1.0 - render method twig template bug fixed related to knp
step 1.1 - page admin update
step 1.2 - page admin update
step 1.3 - page admin update
step 1.4 - blog bundle category admin update
step 1.5 - blog bundle category admin update
step 1.6 - product bundle admin update
step 1.7 - product bundle admin update
step 1.8 - product bundle admin update