Update scripts/mafia.js

Hide role from /roles and /sides (Copied from Pull Request #174)

Make sure I did it right, I'm still a novice at this (I just copied the text and put it in the same spot as TUO did)
Update scripts/mafia.js

Fixing spacing
Merge pull request #212 from Fuzzysqurl/patch-1

Update scripts/mafia.js