Document all of the oper permissions
Direct admins to the oper permissions doc in the config
Merge pull request #86 from Heufneutje/document-oper-permissions

Document all of the oper permissions
Implement the censor module
Hook the censor module into the STATS command
Propagate censored words when added/removed and during bursts
Add Censor configuration to the default config
Document the censor permission