revert r28788 because it is not consistent to add "/view" only in some case. For example, in some cases, we want to have permanent url of images without "/view", and with this method is was not possible.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@30523 20353a03-c40f-0410-a6d1-a30d3c3de9de