webdav fix

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@11600 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5OOo/Document/DMSFile.py

@@ -140,6 +140,7 @@ class DMSFile(XMLObject,File):
   portal_type = 'DMS File'
   isPortalContent = 1
   isRADContent = 1
+  __dav_collection__=0
 
   # Declarative security
   security = ClassSecurityInfo()