Linked to validation docs. Surprising number of generated files in the docs directory, this is probably not a good idea. Improving wording of validation docs. TODO: check through mgvv and make sure it's up-to-date.
Put documentation of the db.json file in Sphinx, in its own page. Linked to this page from main (mgdb) as well as validation page.
Merge remote-tracking branch 'origin/master'