Consider making legal/repoOwner mandatory

[alranel]

As of now, it/riuso/codiceIPA is specified to be mandatory only if legal/repoOwner is a Public Administration. However legal/repoOwner is an optional key, so this creates ambiguity.

We should consider either making legal/repoOwner mandatory or changing the specification for it/riuso/codiceIPA so that it does not mention legal/repoOwner.

[libremente]

I completely agree on this, I would like to see legal/repoOwner as a mandatory key.
Question: which is the case where the repoOwner is unknown? I find it difficult to clearly see it.
If we find no objections, I would try to merge this in 0.3. @alranel
Furthermore, this simplifies the rendering of the catalog, helping to avoid misunderstandings.

[johanlinaker]

As highlighted by @libremente, what about cases when this is unknown or spread out over a community?

[bfabio]

repoOwner was deprecated in 0.5.0, see #229. It's all about organisation and Publishers now.