Add DICTIONARY_AUTHOR

[rowlesmr]

Will close #377.

Added the ability to record authors of a dictionary. Does there also need to be a DICTIONARY_AUTHOR_ROLES category? I think that may overcomplicate things, but it's an option.

[vaitkus]

Thank you for adding the data item for an email address. However, I would like to go back to my previous question -- do we really need data items like address, phone number and fax? These may be useful during the CIF/paper publication process, but not that much in a DDL dictionary which is processed and distributed in a quite different way.

I suggest that we add the minimal useful set of data items for now such as name, email, orcid. The category can always be extended in the future if needed, but I really strongly doubt if we will ever need the fax field.

[rowlesmr]

I think I've sent 2 faxes in my life. Both to renew my radiation licence; they accept emails now.

.

Name, email, and orcid are a minimal set; I was just being conservative in what I wrote by copying what we already had. I'm not phased if the others go.

[jamesrhester]

Agree that minimal information is required here: just name, email, orcid_id.