Applied upper conversion on sorting of categories

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/ics_opendata/trunk@85963 735d13b6-9817-0410-8766-e36946ffe9aa
Applied upper conversion on sorting of categories
Fix last commit

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/ics_opendata/trunk@85964 735d13b6-9817-0410-8766-e36946ffe9aa