use >= 1.4 import path django.conf.urls

From 2.4 release notes:
"In django CMS 2.4 we dropped support for Django 1.3 and Python 2.5. Django 1.4 and Python 2.6 are now the minimum required versions."

From Django docs:
"Changed in Django 1.4: Starting with Django 1.4 functions patterns, url, include plus the handler* symbols described below live in the django.conf.urls module." (https://docs.djangoproject.com/en/1.5/ref/urls/)

Seems to me it's safe to apply this patch and get rid of the DeprecationWarning.