Summary:
* As a User, I want Firefox to prevent me from visiting a site where my information could be stolen so that I'm safe, even if I don't understand the problem.

Acceptance Criteria: 
* Styled as per design
* Broken lock icon displays
* Headline: “Your connection is not secure”
body copy: “The owner of expired.badssl.com has configured their website improperly. To protect your information from being stolen, Firefox has not connected to this website.”
* “Learn more” link goes to SUMO page: https://support.mozilla.org/en-US/kb/tls-error-reports
* Checkbox “Report errors like this to Mozilla” is checked. ( UNCLEAR WHAT THIS IS. DOES NOT SEEM TO BE EXISTING FUNCTIONALITY
* “Return to prior” page button (NEW FUNCTIONALITY? CURRENT “Get me out of here!” BUTTON GOES TO ABOUT:HOME)
* “Advanced” button reveals technical details about invalid cert.
** User cannot manually override the cert for a severe case. 
** User sees an explanation of why they can't visit the site.