providing some naming and/or backwards compatibility (has to be cleaned/updates throughout all iconsets and AI/SVG later) re #3418

git-svn-id: svn://develop.studip.de/studip/trunk@26171 c5b85792-5220-0410-ad23-ed5b6b8ad999
some changes in layer-names means later filenames re #3418

git-svn-id: svn://develop.studip.de/studip/trunk@26172 c5b85792-5220-0410-ad23-ed5b6b8ad999
(admirable) strange fix for $opt['size'] setting/casting #3419

git-svn-id: svn://develop.studip.de/studip/trunk@26173 c5b85792-5220-0410-ad23-ed5b6b8ad999