Rate limits application of coupon codes by user ID to prevent
brute forcing. Refactors the rate limiter to allow limiting based
on arbitrary criteria and not just by IP.
Change-Id: I99d6749bd5b5e47d7e1aeb0314e363a8e7259dba
Added a per IP rate limiter to the console web.
Cleaned up password check to leak less bcyrpt info.
Change-Id: I3c882978bd8de3ee9428cb6434a41ab2fc405fb2