baseUrl required for allowing relative host

[rodneyrehm]

We need to allow relative URLs in order to transparently spin up a web server at a location undisclosed to the user (and test), as well as avoid having the user repeat the full url over and over again.

WebDriver has httpConfig (wd.configureHttp()) that looks like it might help. As far as I can tell it only resolves the URLs for wd.get() and does not reverse the effect for wd.url().

we likely need to patch this into browser.load and assert.url with the latter not really knowing the value, because it's contained in an expectation.

Node only knows url.resolve, but not the other way around…