Include more of the API data

[HeptaSean]

A lot of the data provided through the API JSON files is not presented in the map (or the table).

More specifically, we included a link to our forum category in the "contact.ml" field, which is not viewable anywhere in the map data set for our community.

Since mailing lists or forums are one of the places to go for a first "Hello!" from newly interested people, I think it would be a very good addition to show at least the "contact.ml" field.