Add a way to resend the verification email

[teelur]

From a different issue:

Also, for a feature request, can there be an option to Resend a verification email? For example, when I was testing out the deployment, the verification email would fail to send, so I would make a change to the SMTP settings, but couldn't test resending it. I would blow away all the data and start again. Obviously, once you get SMTP going, you may not need it, but may make it easier for troubleshooting if someone switching SMTP settings. :)