Connect user_logged_in signal

[LilyFirefly]

Add to TokenAuthentication.authenticate_credentials.

[LilyFirefly]

@meshy @kevinetienne Review?

[coveralls]

Coverage remained the same at 100.0% when pulling 9ff3f29 on update-last-login into 9ad71ad on master.

[meshy]

👍

[meshy]

Looks good to me. Are there any other similar signals that we should be connecting?

[LilyFirefly]

Perhaps user_login_failed and user_logged_out.

[meshy]

🆒

[LilyFirefly]

I think there's no good reason to connect user_login_failed. The credentials argument it expects is cleaned by django to avoid leaking sensitive information. But the only information we have to pass to user_login_failed is the token, which is sensitive.

[meshy]

Surely there would be no token on a login attempt, only an email and password?

[coveralls]

Coverage remained the same at 100.0% when pulling b2fe7b3 on update-last-login into 9ad71ad on master.

[LilyFirefly]

Updated. I didn't need to add user_login_failed, because the authenticate function is called in AuthTokenSerializer.validate.

[meshy]

Looks good to me :) Happy when travis is