Add info_hash query
Add info_hash snatch query
Use http statuses for confirmation instead of response body.
Return complete count on torrent existence query (for scrapes).
Type coercion is evil. And coffeescript doesn't help.

Because coffeescript forward declares all variables in a scope and t
hadn't been set, null was coerced to 0, causing t_ago to be a negative
number.  This resulted in no errors being thrown and redis not actually
removing anything from the sorted set.

But it's all just as well because ANNOUNCE_INTERVAL was 6 times smaller
than it should have been anyway!
Change reki from windows to unix line endings.