when everything is OK
 when a document you want to delete has related documents
 when a document you want to delete has related documents you cannot access
 (the later is currently failing in Unauthorized)



git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@23742 20353a03-c40f-0410-a6d1-a30d3c3de9de