TRACKR-141 - Approve/Reject vacation requests by mail
Added an inbound channel for emails and a service that process them.
TRACKR-141 - Approve/Reject vacation requests by mail
Implemented a service that reacts on the mails.
Added a UUID mapping for vacation requests as a secret key to approve via mail.
TRACKR-141 - Approve/Reject vacation requests by mail
Added the UUID to the mail sent to supervisors.