v2.0.1

Move the application config to app/config/config.yml

Most Symfony based projects put their config in app/config/config.yml.
Bundle configurations are used to add extra config options, specific to
this bundle, so not to the full application.

It's thus more logical to move our application configuration to
app/config/config.yml. This makes it less confusing for people used to
other Symfony distrubutions.