fix i18n of form validation messages

ddportfolioservice/controllers/ddportfolio.py

@@ -40,6 +40,9 @@ class DdportfolioController(BaseController):
     def handle_post(self):
         schema = DeveloperData()
         try:
+            formencode.api.set_stdtranslation(
+                domain="FormEncode",
+                languages=[lang[0:2] for lang in request.languages])
             form_result = schema.to_python(request.params)
         except formencode.validators.Invalid, error:
             c.messages = { 'errors' : error.unpack_errors() }