updates to bot.js to support running under #qa channel with occasional test day events

I've been testing this on #testdaybotTest running on irc.mozilla.org. 
Enter :help for general help or /msg _TestDayBot :admin (testDayAdmins only: ashughes, whimboo, galgeek for now) for test day admin help.
stats for now print to the console.
People should have registered their name. Can we find that out if the user has been identified?