re #4063
remove unneeded styles

git-svn-id: svn://develop.studip.de/studip/trunk@29539 c5b85792-5220-0410-ad23-ed5b6b8ad999
re #4063
add info about rule validity time

git-svn-id: svn://develop.studip.de/studip/trunk@29540 c5b85792-5220-0410-ad23-ed5b6b8ad999
re #4063
no validity time for password

git-svn-id: svn://develop.studip.de/studip/trunk@29541 c5b85792-5220-0410-ad23-ed5b6b8ad999