refs #3464 : bugfixing displays with a different ration than 1 or 2.

git-svn-id: svn://develop.studip.de/studip/trunk@27284 c5b85792-5220-0410-ad23-ed5b6b8ad999
refs #3464 : bugfixing displays with a different ration than 1 or 2.

git-svn-id: svn://develop.studip.de/studip/trunk@27285 c5b85792-5220-0410-ad23-ed5b6b8ad999