Minor fixes, new config option.
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* Fixed expired claims not automatically cleaning-up when they included the new skeletal horses.
* Fixed /claim creating tiny claims when the new player chest claim radius is set to -1.
* Fixed /claim allowing players to create more land claims than the limit specified in the config file.
* Added a config option to disable the auto-muting of new players who use banned words during their first play session on your server.
* Added more debug logging around claim expirations.