Repair a broken test.

Signed-off-by: Daira Hopwood <daira@leastauthority.com>
Track only the live site (document.domain == "leastauthority.com").

Signed-off-by: Daira Hopwood <daira@leastauthority.com>
Non-JS fallback for analytics should use an https URL.

Signed-off-by: Daira Hopwood <daira@leastauthority.com>