Update composer.json

Adding some stuuf:
- Developathe CrudBundle (templating Crud actions -- based on Bootstrap)
- Friendsofsymfony jsrouting-bundle (Improve routing for JS actions)
- knplabs/knp-menu-bundle (adding menu capabilities)
- friendsofsymfony/user-bundle (adding Users capabilities)
- gedmo/doctrine-extensions (adding time entites capabilities (createOn/ updateOn)
- stof/doctrine-extensions-bundle (Depencies for above Bundles)