Same commit minus chance useup by answer command

- Longer guess/answer commands: To avoid messing up the two; /a and /g were kept for preference.
- /hadmins used instead of /hangmanauth for practicality.
- Answer length set to 4 minimum (since the hangword's minimum length is so)
- /hadmins advice added to /help
Changing help

Added:
/help commands
/help roles
/help hints
Merge branch 'patch-4' of git://github.com/gabchiconi/po-server-goodies into gabchiconi-patch-4
Fix up #206
Merge git://github.com/BeastCharizard/po-server-goodies into BeastCharizard-master
Fix up #207