Use W3C API to collect data on specs

[dontcallmedom]

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[dontcallmedom]

I've experimented with it in https://github.com/w3c-webmob/mobile-web-app-standards/tree/w3capi ; at the moment, this doesn't seem to be a credible alternative to the ad-hoc RDF parsing, because fetching 200 or so resources from the API server is too slow.

While I initially thought this would not be an issue (since after all it only affects the production phase, it doesn't change anything to the "published" version), it is slow enough that reloading the in-progress document becomes painful, and thus makes the overall update process too cumbersome.

Probably worth revisiting when w3c/w3c-api#60 lands, in which case one can hope that beyond the "first" load, reloads should be reasonably faster.

An alternative (or a complement) is to integrate a Service Worker layer and use a cache-first strategy.