Allow sign in with Github

[arky]

Please allow users to reuse their github accounts to sign in.

We have trained users to use github, it would be good to allow them to reuse their accounts instead of creating new accounts that are limited to 24 hours.

[agrabeli]

Hi @arky, thanks for the feedback (and for training users to use GitHub!).

While the email sent with the link refers to an "account", it's not really an account, as it's not uniquely tied to the user. We have now changed the interface a bit to no longer require a nickname, but only an email address (to which the login link is sent to).

We do not collect or store email address (they're only required for sending the login link), so the email addresses are not tied to users.

Users can easily login at any moment by merely adding an email address, and clicking on the login link sent to that address.

The 24h login limit helps encourage users to make multiple, smaller submissions (which may be reviewed and merged faster).

I think it's great that you've trained users to use GitHub, as they will need that for interacting with their pull request (which is opened automatically via the Test Lists Editor), to address any feedback shared by reviewers.