return the message as a string

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@30300 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/NodeBudgetVariation.py

@@ -47,7 +47,7 @@ class VirtualNode(object):
     self.relative_url = relative_url
 
   def getTitle(self):
-    return translateString('All Others')
+    return str(translateString('All Others'))
 
   def getRelativeUrl(self):
     return self.relative_url