new avatar v 0.1 (for retina) re #3464

git-svn-id: svn://develop.studip.de/studip/trunk@26409 c5b85792-5220-0410-ad23-ed5b6b8ad999
refs #3464 : change paths for retina displays

git-svn-id: svn://develop.studip.de/studip/trunk@26410 c5b85792-5220-0410-ad23-ed5b6b8ad999