the showPersonsSelector is not used on the booking form at all --> removed it

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/ab_booking/trunk@85660 735d13b6-9817-0410-8766-e36946ffe9aa
enable selectboxes in form

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/ab_booking/trunk@85661 735d13b6-9817-0410-8766-e36946ffe9aa