re #3746 add functionality for resharing, but still some work is needed.

git-svn-id: svn://develop.studip.de/studip/trunk@27682 c5b85792-5220-0410-ad23-ed5b6b8ad999
re #3746 add functionality for resharing, but still some work is needed.

git-svn-id: svn://develop.studip.de/studip/trunk@27683 c5b85792-5220-0410-ad23-ed5b6b8ad999