Fix for haproxy's ID format.
Fix haproxy timestamp parsing.
Add more granular distributed rate limit check.
Proxy through Varnish to allow for HTTP caching.
Restore sane defaults for rate limits.
Switch log listener to tail from nginx's log file.

This is part of a larger switch to use nginx as the router mechanism (at least
for now until server-side keep-alive lands in HAProxy's 1.5 branch).