* we should have at most only one published/released/shared document for each reference/language, i.e. we should not have both published and released document with the same reference/language at the same time.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@44661 20353a03-c40f-0410-a6d1-a30d3c3de9de