re #4520

git-svn-id: svn://develop.studip.de/studip/trunk@31177 c5b85792-5220-0410-ad23-ed5b6b8ad999
StEP00249: fix news icon in course-list, re #4484

git-svn-id: svn://develop.studip.de/studip/trunk@31178 c5b85792-5220-0410-ad23-ed5b6b8ad999