reverting classFile removal - does not work in 6.0.x without them

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/cal/trunk@83453 735d13b6-9817-0410-8766-e36946ffe9aa
fixed bug #55408

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/cal/trunk@83454 735d13b6-9817-0410-8766-e36946ffe9aa
added missing tx_cal_controller reference

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/cal/trunk@83455 735d13b6-9817-0410-8766-e36946ffe9aa
no need for this function anymore

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/cal/trunk@83456 735d13b6-9817-0410-8766-e36946ffe9aa