OO-2740: remove the email of the person leaving the group from the email to the person gaining access to it (patch S. Clemenz)
no-jira: selenium tests for QTI 2.1 editor, 2 multiple choices with different settings, scoring and feedbacks
no-jira: selenium tests for QTI 2.1 editor, 2 single choices wth different settings, scoring and feedbacks
