Fix for Bug #58629 - invalid SQL in icalender service

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/cal/branches/cal_LTS_4.5@85196 735d13b6-9817-0410-8766-e36946ffe9aa
Fix for Bug #58406 - Problem with FE-Edit/Categories 

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/cal/branches/cal_LTS_4.5@85197 735d13b6-9817-0410-8766-e36946ffe9aa