Move format stripping into utils
Remove error batch handling for the commandpermission action
Remove error batch handling for the joinpermission action
Fix commandpermission/joinpermission error messages not to use the error batch
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.
Merge pull request #51 from ekimekim/dev/0.3

stripping format chars from messages more generally