Resend confirm email

Summary

If a user creates a new account and doesn't confirm it within a day, re-send the confirmation email.

Run schedule

This is supposed to run once a day. Please @markeharding validate it's properly set here: helm-charts!36 (merged)

Closes #1396 (closed)

Testing

Create a new user, wait a day without confirming the email address and you should get another email.