symfony routing

Integrating the Symfony routing component. This will make it easier to route some code to full stack Symfony (Bundles) when other code is still run on the legace code of Fork.

- [x] Replace the code in the routing.php file with the Symfony routing component
- [x] Load routes from a yaml file
- [ ] Pass the variables from the url directly to the needed class
  - [ ] Backend: module, action, language
  - [ ] Frontend: url
- [x] Generate url's with the routing component

Note: since frontend url's are that custom, only the backend url's are build with the Symfony routing component (for now).

Related issue: https://github.com/forkcms/forkcms/issues/409
you may also want to look at Symfony2 CMF Bundle in another step. This would enable you to no longer need a catch all route like this but instead do lookups if a page exists in the routing layer itself. This would also make it possible to eventually support different controllers for different types of content.

http://symfony.com/doc/master/cmf/components/routing/index.html