moved DMS preference property sheet to the right place, hooked to Preference class

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@9236 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Form/Document/Preference.py

@@ -56,6 +56,7 @@ class Preference( Folder ):
                     , PropertySheet.AccountingPreference
                     , PropertySheet.SubversionPreference
                     , PropertySheet.HtmlStylePreference
+                    , PropertySheet.DMSPreference
                     )
   
   # Declarative security