corrected image display for smarte object canvas

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/meta_feedit/trunk@85567 735d13b6-9817-0410-8766-e36946ffe9aa
We alaways show cell border (even on images). To be improved

git-svn-id: https://svn.typo3.org/TYPO3v4/Extensions/meta_feedit/trunk@85568 735d13b6-9817-0410-8766-e36946ffe9aa