- add property sheet providing int_index property

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@28958 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5OOo/Document/OOoDocument.py

@@ -140,6 +140,7 @@ class OOoDocument(PermanentURLMixIn, File, ConversionCacheMixin):
                     , PropertySheet.ExternalDocument
                     , PropertySheet.Url
                     , PropertySheet.Periodicity
+                    , PropertySheet.SortIndex
                     )
 
   # regular expressions for stripping xml from ODF documents