Sanitized AutoWho. Now rather than bulk-sending /WHO every minute for every channel,

Sanitized AutoWho. Now rather than bulk-sending /WHO every minute for every channel,
we use a nice queue and a 3 second delay (should later be made configurable). This
should prevent networks from throttling us.
For the enduser this primarily means that that annoying lag when sending to certain networks
such as Freenode should be history, at the cost of slightly slower away status updates.