fixes fatal error caused by not found htmlReady, this is a hotfix and i have no better idea... refs #5248

git-svn-id: svn://develop.studip.de/studip/trunk@33075 c5b85792-5220-0410-ad23-ed5b6b8ad999
fixes category styles in month view refs #5248

git-svn-id: svn://develop.studip.de/studip/trunk@33076 c5b85792-5220-0410-ad23-ed5b6b8ad999