Move resolve step last in u-* parsing

[Zegnat]

This matches the proposed parsing change from microformats/microformats2-parsing#10.

Note that one old test had to be updated, because it tested for textContent being returned as is. And now we resolve strings gotten from there too.

If I am reading the URL spec right though, the URL we are returning isn’t actually a valid URL. Spaces are in the path percent-encode set so should be replaced with %20 … I think. Ideas?

[aaronpk]

I think I'm in favor of merging this as is, even if it still returns invalid URLs, because it won't return anything more broken than the current version. I do think it should properly escape URLs in the parsed result though, since that's what would happen if you included a link in an <a> tag in a browser that included spaces. (The browser converts those to %20.