forum: link to specific post instead of parent topic by using it's permalink, fixes #4778

git-svn-id: svn://develop.studip.de/studip/trunk@31966 c5b85792-5220-0410-ad23-ed5b6b8ad999
forum: link to specific post instead of parent topic by using it's permalink, fixes #4778

git-svn-id: svn://develop.studip.de/studip/trunk@31967 c5b85792-5220-0410-ad23-ed5b6b8ad999