messages/write: removed triple text for adding recipients link, fixes #3961

Closes #3961

Merge request studip/studip!2857


(cherry picked from commit 1c0302b5)

fa0e9a4e messages/write: removed triple text for adding recipients link
bf3559b6 do not set title in MultiPersonSearch
5009117a Apply 1 suggestion(s) to 1 file(s)