/f role - add list/description of Faction member roles

The "Faction Guide" (/faq) lists /f role, but if you run this command, it says "Usage: /f role <role> <player>" The issue is that this assumes that you know what the roles are (and ideally what the hierarchy is). From lowest-highest: Recruit Member Mod Coleader Leader It would be nice if "/f role" gave a list of all the roles (and made it clear that "recruit" is lowest, "leader" is highest)