studygroups: always allow members to be kicked out, fixes #3607

git-svn-id: svn://develop.studip.de/studip/trunk@27396 c5b85792-5220-0410-ad23-ed5b6b8ad999
swap tooltips on external pages configuration, fixes #3586

git-svn-id: svn://develop.studip.de/studip/trunk@27397 c5b85792-5220-0410-ad23-ed5b6b8ad999