Fix set current route parameters with pretty urls enabled

[zorn-v]

For example {{ ea_url() }} in templates always return / now, but should return current url as with ugly urls.

[javiereguiluz]

Thanks @zorn-v.

While merging I changed the implementation a bit. Instead of taking all route attributes, we now only take the attributes related to EasyAdmin (CRUD controller, action, etc.). I also added some tests.

See 533e89a