All xfwd and tests fails with this change, but that's because the
tests themselves were incorrect (using port 80/443 instead of the
ephemeral ports created for the tests).
webkit-devtools-agent (tested with 0.2.4 and 0.3.1) is incompatible with
Node 0.12.0. The manual test adds no value at this point, so it has been
removed, including the dependencies (webkit-devtools-agent).
If you wish to check if the API works, launch demo.html,
set the global cors_api_url variable to your local instance,
enter an URL and press "GET" or "POST".
