drafter:version on graphs not exposed through SPARQL #648
Description
It looks like we expose the drafter graph modfied times as an RDF graph on the public/live endpoint; however we do not appear to expose the etag-like drafter:version in the RDF.
It may be useful to do this at somepoint; though we'll need to be careful we only expose the drafter:version on public graphs.
We do expose the version on endpoints via the drafter JSON API though.