When networks act up, Review Board can hit issues with timeouts or

delayed processing of requests. It can sometimes be hard to diagnose

what's going on in these cases.
In an effort to address this, we now have log timers around all code

invoking HTTP requests, sending e-mails, communicating with

repositories, publishing, and performing security checks.
These are DEBUG logs in most cases, so administrators will only see new

log items if operations are taking too long (triggering the WARNING or

CRTICIAL levels).

All unit tests pass.
Tested sending e-mails, fetching branches and commits, viewing diffs,

and triggered a webhook.