Status

Status as mentioned in #119, excluding connections as discussed on irc.

Fairly standard stuff. Only rough thing is cache size. For memory cache, it's a rough estimate, probably a bit on the low end, based off the SKIN_SIZE const and bow many members are the in usernames slice. For Redis cache, we send the INFO command get the entire memory usage of the Redis instance, which'll be a slight overestimate as that includes Redis' own operating memory..