removed ics link from list view

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/cal/trunk@84950 735d13b6-9817-0410-8766-e36946ffe9aa
fixed comment

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/cal/trunk@84951 735d13b6-9817-0410-8766-e36946ffe9aa
fixed image rendering

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/cal/trunk@84952 735d13b6-9817-0410-8766-e36946ffe9aa
updated manual with release info

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/cal/trunk@84956 735d13b6-9817-0410-8766-e36946ffe9aa
increased version to 1.6.0

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/cal/trunk@84957 735d13b6-9817-0410-8766-e36946ffe9aa