update copyright, remove unused spaces

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@29320 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/PropertySheet/Preference.py

 ##############################################################################
 #
-# Copyright (c) 2005 Nexedi SARL and Contributors. All Rights Reserved.
+# Copyright (c) 2005-2009 Nexedi SA and Contributors. All Rights Reserved.
 #                    Jerome Perrin <jerome@nexedi.com>
 #
 # WARNING: This program as such is intended to be used by professional
@@ -32,7 +32,7 @@ class Preference:
 
     XXX: why is this here and not in ERP5Form ?
   """
-  
+
   _properties = (
     { 'id'          : 'priority',
       'description' : 'Priority of the preference.',