js: fix urlhelper's param handling, re #3791, fixes #3727

git-svn-id: svn://develop.studip.de/studip/trunk@28041 c5b85792-5220-0410-ad23-ed5b6b8ad999
re #3835 removed "content_seperator" class to get new design working

git-svn-id: svn://develop.studip.de/studip/trunk@28042 c5b85792-5220-0410-ad23-ed5b6b8ad999