can happen during conversions.
even if ODT => HTML is permitted,
conversion raise Unauthorized because it needs access to raw format.
This patch address this issue: inside convert no more checking are computed.



git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@35998 20353a03-c40f-0410-a6d1-a30d3c3de9de