Deprecation warnings since upgrade to Django 1.5

We're filling our logfiles with noise since the Django 1.5 upgrade:
{{{
2013-06-24 06:25:05,096 - py.warnings - WARNING - /srv/sc.staging.ubuntu.com/staging/software-center-agent/sourcecode/django/django/conf/urls/defaults.py:3: DeprecationWarning: django.conf.urls.defaults is deprecated; use django.conf.urls instead
  DeprecationWarning)

2013-06-24 06:25:05,221 - py.warnings - WARNING - /usr/lib/python2.7/dist-packages/lazr/restfulclient/__init__.py:19: UserWarning: Module preflight was already imported from /srv/sc.staging.ubuntu.com/staging/software-center-agent/sourcecode/django-preflight/preflight/__init__.pyc, but /usr/lib/python2.7/dist-packages is being added to sys.path
  import pkg_resources
}}}

Let's go through and attend to them so the logs are easier to use :)