Fix translation-of-non-string errors

common/djangoapps/external_auth/views.py

@@ -496,7 +496,7 @@ def shib_login(request):
         http://www.incommonfederation.org/attributesummary.html#eduPersonPrincipal
         but the configuration is in the shibboleth software.
     """
-    shib_error_msg = _(dedent(
+    shib_error_msg = dedent(_(
         """
         Your university identity server did not return your ID information to us.
         Please try logging in again.  (You may need to restart your browser.)

openedx/core/djangoapps/user_api/preferences/api.py

@@ -369,6 +369,7 @@ def validate_user_preference_serializer(serializer, preference_key, preference_v
         PreferenceValidationError: the supplied key and/or value for a user preference are invalid.
     """
     if preference_value is None or unicode(preference_value).strip() == '':
+        # pylint: disable=translation-of-non-string
         format_string = ugettext_noop(u"Preference '{preference_key}' cannot be set to an empty value.")
         raise PreferenceValidationError({
             preference_key: {