Merge ui and ui_next in one dir

Merge ui and ui_next in one dir

See: https://github.com/ansible/awx/issues/10676

Update django .po files

Update django .po files

Run `awx-manage makemessages`.

awx/sso/views.py

@@ -25,7 +25,7 @@ class BaseRedirectView(RedirectView):
     def get_redirect_url(self, *args, **kwargs):
         last_path = self.request.COOKIES.get('lastPath', '')
         last_path = urllib.parse.quote(urllib.parse.unquote(last_path).strip('"'))
-        url = reverse('ui_next:index')
+        url = reverse('ui:index')
         if last_path:
             return '%s#%s' % (url, last_path)
         else: