Added a setting for roulette minimum amount.
Added a setting for roulette minimum amount.

Also cleaned up the chat a bit, using whispers more.
Fixes #167

pajlada/tyggbot,pajlada/tyggbot,pajlada/pajbot,pajlada/pajbot,pajlada/tyggbot,pajlada/tyggbot,pajlada/pajbot,pajlada/pajbot