Add __repr__ method to Message class to display original message.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@38860 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/Message.py

@@ -164,6 +164,9 @@ class Message(Persistent):
 
     return message
 
+  def __repr__(self):
+    return "<ERP5Type.Message.Message for %r>" % self.message
+
   def __str__(self):
     """
     Return the translated message as a string object.