RE #3588 Moved PHPExcel to Vendor

git-svn-id: svn://develop.studip.de/studip/trunk@27126 c5b85792-5220-0410-ad23-ed5b6b8ad999
RE #3588 Moved PHPExcel to Vendor

git-svn-id: svn://develop.studip.de/studip/trunk@27127 c5b85792-5220-0410-ad23-ed5b6b8ad999
add modernizr, fixes #3629

git-svn-id: svn://develop.studip.de/studip/trunk@27128 c5b85792-5220-0410-ad23-ed5b6b8ad999