Revert "fix image location - img file mangled the URL and lost the image"

This reverts commit 0bccb2959288ad8b6f4a351a4a40184bbb227a91.

This would result in an absolute path such as
/tmpImages/job-.../SurvivalCurve.png. We need it to be like
/transmart/images/tempImages/job-.../SurvivalCurve.png