Added in cleverbot AI and removed ai/resp modules.

The AI is triggered any time any message is directed directly to jenni
in a channel or any message is sent to jenni in PM that does *not*
trigger an existing command. This is disabled by default.
changed safeguards to prevent abuse by admins
Add .lisp functionality

Code by Peter Norvig and shared with permission.
Removed longer rate limit for .ask
Added feature for verbosity

.calc will now show the equation as Google sees it when calculating the
given equation.
Changed error handling