IconUrl, embedMedia, moreInfoUrl, tags and contributionDate are now optional fields both in POST and PUT methods. UI-code which possibly relies on these fields should be careful about getting nulls once in a while. Also changed catalogue models a bit. Simple migration should fix possible problems.
Merge branch 'devel' of https://github.com/koulutuksenpilvivayla/pilvivayla-basaari into devel