https://www.djangoproject.com/weblog/2016/nov/01/security-releases/

ECOM-4641

- Cookie now includes users' enrollment info
- Removed user email address from cookie
- Refactored functions so that we can update this cookie on other pages
- Added six to ensure new code is compatible with Python 3.x

ECOM-4896

clear request cache to avoid memory leak

update to use https

delete courses in the same transaction as writing them

python3 compatibility

Also make sure we set the recommended settings according to
<https://django-debug-toolbar.readthedocs.io/en/stable/installation.html#explicit-setup>

This reverts commit 5d150a39.

See ECOM-5345 for more details.

Refactor all S3 code to use the django storage API and add swift
settings for openstack deployments