Extract initial player mode computation
Clean up BukkitIRCdPlayerListener

Functionality shouldn't change
Remove unused per-player debugging code
Clean up Dynmap listener
Remove unused server listener
Clean up permission checks and colorization
Clean up /list command
Clean up /whois

This commit takes advantage of the fact that bukkit already
checks permissions for commands and provides usage strings
Clean up /topic

Support clearing the topic, take advantage of built-in permission checks
Clean up /ircreload

Take advantage of built-in permission checks. Avoid extra message
when run from a user.
Clean up /ircmsg
Support silent disconnections for plugin disable in standalone mode
Clean up /rawsend
Clean up /irckick
Merge pull request #94 from glguy/cleanups

Many Cleanups, including player mode computation, BukkitIRCdPlayerListener, Dynmap Listener, unused Server Listener, permission checks, /irclist /whois /topic /ircreload /ircmsg /rawsend and /irckick commands, and silent standalone disconnects.