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)
This allows us to keep a record of the user's name as returned by Google
Apps authentication.
(imported from commit cbfe383a51b480400b8f0e5f40c725562ffc6a66)