show received AND given likes, refs #4057

git-svn-id: svn://develop.studip.de/studip/trunk@28809 c5b85792-5220-0410-ad23-ed5b6b8ad999
re #3835 bugfixes

git-svn-id: svn://develop.studip.de/studip/trunk@28810 c5b85792-5220-0410-ad23-ed5b6b8ad999