[PROPOSAL] Use full asset URLs instead of relative paths.

If you include HTML into a different site w/ a relative path to javascript it won't be loaded (since it doesn't exists on the local server).

I'm up for other options for being able to generate the absolute URL to the javascript assets, but I couldn't find anything that wouldn't necessitate requiring the entire routing framework wholesale into all our viewers.
But yes, as you mention, the spec requires that the API endpoint be plain http.