Added Multi-threading to prevent performance issues
Added back Chat.Prefix because I accidentally removed it

Changed config structure.
Tab.Names.Use -> Names.Use
Tab.Worlds.Use -> Worlds.HeaderFooter.Use
Tab.Names.Worlds.Use -> Worlds.Names.Use
Tab.Header.Use -> Header.Use
Tab.Header.Content -> Header.Content
Tab.Footer.Use -> Footer.Use
Tab.Footer.Content -> Footer.Content

Removed the Tab infront of all config parts.

Fixed bug where command message prefix was null