Figure out how to extricate Sauce connect info from CI errors

[cmc333333]

We run Django with DEBUG = True when running our tests. This leaves open a door for a test error to leak sensitive and semi-sensitive information. For example, tests can leak info in debug logs and when hitting failure pages.

Two examples:

• logs: https://travis-ci.org/eregs/regulations-site/jobs/149301618#L1385
• debug page: https://travis-ci.org/eregs/regulations-site/jobs/149301618#L1385

It may be the case that running with DEBUG = False resolves these issues.

[cmc333333]

Just a heads up that we've deactivated the relevant API key, so sauce will fail until this is resolved.