applied patch; fix issue #57003

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/ab_booking/trunk@84408 735d13b6-9817-0410-8766-e36946ffe9aa
working on documentation

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/ab_booking/trunk@84409 735d13b6-9817-0410-8766-e36946ffe9aa