fix an issue with summer-/winter time

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/ab_booking/trunk@83706 735d13b6-9817-0410-8766-e36946ffe9aa
fix issue with number of persons in user form

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/ab_booking/trunk@83707 735d13b6-9817-0410-8766-e36946ffe9aa