SimpleZones

- Fixed a bug where enabling/disabling flags for areas had the opposite effect.

• The default setup for permissions sucks.
• If updating SimpleZones, pre-existing towns will have an entry message of "null" until set. This bug does not exist for newly created towns.
• The config and flag system needs to be updated to account for new entities since the last update.
• The Flag system is written horribly, and it's a huge mess to add new flags. Rewrite, maybe?
• The system for handling commands is even worse. If anyone has an idea, please, give me a suggestion.
• The help pages on BukkitDev haven't been updated quite yet. That'll probably get done over the next few days.