corrected base categories

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@9402 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5OOo/PropertySheet/DMSFile.py

@@ -37,7 +37,7 @@ class DMSFile:
     'mode'    : '' },
     )
 
-  _categories = ('destination','similar','source','source_project','publication_section','classification',
+  _categories = ('destination','similar','predecessor','successor','source_project','publication_section','classification',
       'function','group','site')