Minor change to auto-starts.

Added a message for when a player attempts to start a round when there are
auto-starts remaining. Removed confirmation message when a player folds in
poker.
Removed "fold" confirmation on leave for poker.
Fix for issue #47.

Games can now be started automatically by specifying the channels, in which they
should automatically start, in ircccasino.conf. Added saveConfig() in CasinoBot to make code easier to read (and for future enhancements). Other minor changes.