Our WSGI script is very old, and attempts to import and construct a

WSGIHandler instance directly. Even in Django 1.6, this was not the

recommended approach. Instead, we now call get_wsgi_application(),

which has the important addition on Django 1.7+ of calling

django.setup() to initialize Django before serving requests. This is

fully backwards-comaptible.
rb-site will perform an upgrade on this file, converting the old logic

to the new logic automatically without altering anything else in the

file.

Performed an upgrade on a legacy file. Verified that it was upgraded

correctly.
Verified that the new logic returns a valid WSGIHandler on both

Django 1.6 and 1.11.