Trim new lines from event tooltips
The calendar view shows tooltips of the events.
The tooltip of https://mail.aegee.org/dav/calendars/user/k/online/bb971ce31bc49bff6db81444b3ae196dd633dfb421af55c772487cc017dfa2.ics contains Summary, Start and Duration.
The tooltip of https://mail.aegee.org/dav/calendars/user/k/OMS/e947872a-224b-4c84-8d25-90a541a9ec6-94.ics contains in addition a Location and at the end one empty line.
The tooltip of https://mail.aegee.org/dav/calendars/user/k/online/479ddbf32a349be45a23bdb6a1977116de25aba3ff35271edf869b34d06cb7.ics contains at the end three empty lines.
• The tooltips in the calendar view shall not end in empty lines.