Changelog:
* Fixed a bug that allows buy price and refund prices to be unequal due to skill discounts
* Added a bunch of nether blocks to config.yml (Thanks Rumieru)
* You can now create/consume civ items using regions
* You can now put item groups inside other item groups. Do not make a circular dependency
* Fixed some translations for evolved or upgraded buildings
* Fixed a bug that prevented members of towns from seeing their ports
* Fixed some default configs for people using the empty config set
* You can now turn off exp chat notifications in config.yml