Avoid a separate request for login in each test
Avoid a separate request for login in each test

This should make the tests run slightly faster, and it has the advantage
that the test HTTP client doesn't have a previous response stored when
the test starts.

The JWT token is created programmatically as described here:
https://github.com/lexik/LexikJWTAuthenticationBundle/blob/2.x/Resources/doc/7-manual-token-creation.md

The token is then split across two cookies with different settings, as
configured in config/packages/lexik_jwt_authentication.yaml

ecamp/ecamp3,pmattmann/ecamp3,ecamp/ecamp3,usu/ecamp3,pmattmann/ecamp3,usu/ecamp3,pmattmann/ecamp3,usu/ecamp3,ecamp/ecamp3,usu/ecamp3,pmattmann/ecamp3,ecamp/ecamp3