install document_item before property_sheet_item. This is

required because some bt can have specific property sheets
portal types (mostly for constraints) using a document class
installed by the same bt

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@43550 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/BusinessTemplate.py

@@ -4405,9 +4405,9 @@ Business Template is a set of definitions, such as skins, portal types and categ
     #    ( and more )
     _item_name_list = [
       '_product_item',
+      '_document_item',
       '_property_sheet_item',
       '_constraint_item',
-      '_document_item',
       '_extension_item',
       '_test_item',
       '_role_item',