cleanup in backend and frontend module 
- removed unused (already commented) global vars

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/rs_securedownload/trunk@85947 735d13b6-9817-0410-8766-e36946ffe9aa
release 0.2.5

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/rs_securedownload/trunk@85950 735d13b6-9817-0410-8766-e36946ffe9aa