"...git@git.uibk.ac.at:c102348/olat-ci-cd-testing-project.git" did not exist on "a4cf2fdde79c12922e0121f45a840363a322bddb"
OO-750: refactor the mail package to provide a MailManager as a service, enable sending HTML E-Mails, add a customizable E-Mail template with a small editor in admin