Merge pull request #49 from ekimekim/dev/0.3

A few fixes, most notably a fix for Issue #48
Move format stripping into utils
bidserv: Strip formatting and potential problem characters from smack talk

This is important since this message goes out channel-wide, so we don't want people to be able to mess with it.
We strip all ascii non-printing chars, hopefully this will be enough without disallowing unicode.