fixes #4060

git-svn-id: svn://develop.studip.de/studip/trunk@28807 c5b85792-5220-0410-ad23-ed5b6b8ad999
count the likes recevied, not given, fixes #4057

git-svn-id: svn://develop.studip.de/studip/trunk@28808 c5b85792-5220-0410-ad23-ed5b6b8ad999