https://code.in2code.de/issues/10887 custom category filters

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/dam_frontend/trunk@84192 735d13b6-9817-0410-8766-e36946ffe9aa
https://code.in2code.de/issues/11952 remove error messages

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/dam_frontend/trunk@84193 735d13b6-9817-0410-8766-e36946ffe9aa