id,node_id,number,title,user,state,locked,assignee,milestone,comments,created_at,updated_at,closed_at,author_association,pull_request,body,repo,type,active_lock_reason,performed_via_github_app,reactions,draft,state_reason
1555701851,PR_kwDOBm6k_c5IdsD7,2003,Show referring tables and rows when the referring foreign key is compound,536941,open,0,,,3,2023-01-24T21:31:31Z,2023-01-25T18:44:42Z,,CONTRIBUTOR,simonw/datasette/pulls/2003,"sqlite foreign keys can be compound, but that is not as well supported by datasette as single column foreign keys.

in particular, 

1. in a table view, there is not a link from the row to the referenced row if the foreign key is compound
2. in a row view, there is no listing of tables and rows that refer to the focal row if those referencing foreign keys are compound.

Both of these issues are discussed in #1099. 

This PR only fixes the second one, because it's not clear what the right UX is for the first issue.

![Screenshot 2023-01-24 at 19-47-40 nlrb bargaining_unit](https://user-images.githubusercontent.com/536941/214454749-d53deead-4151-4329-a5d4-8a7a454de7d3.png)

Some things that might not be desirable about this approach.

1. it changes the external API, by changing `column` => `columns` and `other_column` => `other_columns` (see inline comment for more discussion.
2. There are various places where the plural foreign keys have to be checked for length and discarded or transformed to singular. 
",107914493,pull,,,"{""url"": ""https://api.github.com/repos/simonw/datasette/issues/2003/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",0,
1554032168,I_kwDOBm6k_c5coKYo,2002,Document how actors are displayed,9599,open,0,,,0,2023-01-24T00:08:49Z,2023-01-24T00:08:49Z,,OWNER,,"https://github.com/simonw/datasette/blob/e4ebef082de90db4e1b8527abc0d582b7ae0bc9d/datasette/utils/__init__.py#L1052-L1056

This logic should be reflected in the documentation on https://docs.datasette.io/en/stable/authentication.html#actors",107914493,issue,,,"{""url"": ""https://api.github.com/repos/simonw/datasette/issues/2002/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,