[BUGFIX] ID is not converted to an integer to enable string IDs again

Change-Id: Ia3f1295d357e72a71a1efbdc9c7c530740838435
Resolves: #60709
Reviewed-on: http://review.typo3.org/31926
Reviewed-by: Jo Hasenau <info@cybercraft.de>
Tested-by: Jo Hasenau <info@cybercraft.de>