WS-1479 Switched notification service to use send_message over sendmail
Switched to using send_message which only requires an email message object with headers and content loaded from the template and completed from the parameters.
NRAO staff can now use "Openid Connect" to log in to GitLab via Microsoft
Switched to using send_message which only requires an email message object with headers and content loaded from the template and completed from the parameters.