set encoding

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@26644 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/PropertySheet/Chain.py

 ##############################################################################
-#
+# -*- coding: utf8 -*-
 # Copyright (c) 2009 Nexedi SA and Contributors. All Rights Reserved.
 #                    Łukasz Nowak <luke@nexedi.com>
 #