Development/Season of Docs/2019/MusicBrainz

Ideas

• Musicbrainz already has https://musicbrainz.org/doc/ as well as dev docs like https://musicbrainz.org/doc/Development and Guidelines https://musicbrainz.org/doc/Style and beginner-guides and how-to's; https://musicbrainz.org/doc/Beginners_Guide .
• However much of things are outdated and will need updating and improving.
• Documentation for our web service needs improvement:
  • Development/XML_Web_Service/Version_2 is missing information about authenticating with OAuth.
  • Development/JSON_Web_Service is incomplete, lacking a useful description of the data format, and any important differences with the XML web service.
• We have no documentation about seeding entity forms. e.g. https://musicbrainz.org/artist/create?edit-artist.name=foo&rels.0.target=b10bbbfc-cf9e-42e0-be17-e2c3e1d2600d