Add option to link subject facets to people (and similar) articles

[almontg]

Currently, in the "associated authority records" field of the people articles, I can add mulitple name_facets that then show up as related maps on the published page, ie:

I'd love the ability to add subject_facets as well

[diedrick]

Not sure I fully get what we're doing here.

The associated authority records is what connects a person to a map, right? We already have a different way to connect subjects to maps -- since they're our subjects.

I did add the field to the admin people page:
https://argo.stage.diedrick.com/admin/people.php/1

...so maybe add a few and that'll help me make connection then. (Just tell me where that connection would appear on the front end.)

BTW, it'll help if we always include a URL for any issue to make sure we're not guessing at what page we're talking about.

[almontg]

My reason for wanting this is that sometimes the connection people have to the maps is not through the name facet, but in the subject facet — for example, the Clements Library has a huge collection of maps owned by Sir Henry Clinton, and this relationship is made clear through a subject tag—Clinton Maps—which will be coming in with their metadata rather than as a name facet. I'd like to be able to write—or have someone else write—an article about Clinton and have it auto-link to all of the maps with the "Clinton Maps" tag. I can see similar uses for some of the event- or location-based subject tags which we get in the metadata.