we do not expose M2 in srp.js anymore.

So there is no way to print it. This message used to be correct but there are also other things that can cause this to fail now. So let's just remove it.
make sure capybara runs the whole rack app

We use port 3003 for the integration test server.
This test takes a few seconds (~8) now. Most of this is startup time of the server. A second run still takes 2 seconds like before.