make labels in scheduler visible in TYPO3 6.2

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/lowlevel_scheduler_task/trunk@84115 735d13b6-9817-0410-8766-e36946ffe9aa
fix cleanup task for TYPO3 6.2

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/lowlevel_scheduler_task/trunk@84116 735d13b6-9817-0410-8766-e36946ffe9aa