Wrapping render_to_response never actually worked correctly. On the
login page, mixpanel_token would be missing, but we wouldn't get an
error because it is surrounded by double quotes, which meant that it
was still valid Javascript.
(imported from commit 820ee42fab8f679983e5a3a4309a2feaf690f20f)
See PEP 328[1] for details. This feature was introduced in Python 2.5 and
will become mandatory in Python 3.
[1]: http://www.python.org/dev/peps/pep-0328
(imported from commit 7444eeba8a08d5f91b94c7921848f2274979bd76)
Zev Benjamin
Luke Faraone