gavelmaster: Fix uninitialized auction bug

The "running" flag clashed with its parent class.  As a result, users
could bid in auctions that weren't currently running.

The fix is to rename the variable.  And while we're at it, use accessors.
irc-botmanager: Pull config from a remote server

The bot's config is now pulled from a remote server.  This enables live
replacing of bots.