Team members are only visible by organisation members

[giux78]

Team members are only visible by organisation members following the links:

https://developers.italia.it/it/daf/#i-project-leader-di-questo-progetto

https://github.com/orgs/italia/teams/daf

You are asked to login.

[alranel]

Hm, the team is already set to "visible", but that does not make it truly public. It looks like there's no way to display team members publicly. I think the best solution is to add people profiles manually to _data/people.yml and display thumbnails automatically in the project pages, like we already do for teamdigitale.governo.it.
cc @ruphy

[alranel]

Alternative idea: get team members from API at website build time. We'd still need to map GitHub nicknames in the website config files.
https://developer.github.com/v3/orgs/teams/#list-team-members

[alranel]

Fixed by #99