APPEND_SLASH not working

[st4lk]

Such test fails for some reason with example project:

 def test_append_slash(self):
        response = self.client.get('/ru/about')  # no slash at the end
        self.assertEqual(response.status_code, 301)
        response = self.client.get(response['Location'])
        self._base_page_check(response, "ru", "about")

Tried with django 1.7.4

[mehdipourfar]

I've fixed that issue for myself by adding CommonMiddleware after SolidLocaleMiddleware.