PID endpoint metadata

From @sarala on Tue Aug 21 2018 11:39:51 GMT+0000 (UTC)

Provide metadata at PID endpoints to support graph building.

Copied from original issue: https://github.com/datacite/freya/issues/76

From @mfenner on Tue Aug 21 2018 19:59:33 GMT+0000 (UTC)

I suppose this is landing pages for datasets and other content, and embedded schema.org metadata?