background income, trade income, horde upkeep

Updated so that the Sisters, Drycha, and Throt get the OP Legendary Lord settings. None of the other scripts should need updating, but if something broke, please let me know.

Implemented horde growth

hot fix for ai building costs

Magic update pushed. There are now a full suite of magic options that you can tweak. Also, the untainted/corruption and growth settings have been bumped up, so you can really overpower corruption if you want.

Economy settings implemented. Menus now start collapsed for ease of navigation. All functions are modularized, and will only fire if you changed that particular setting. Should help with load times when starting a campaign.

Army upkeep implemented. Some functions modularized.

Added a character turn start listener for chaos and empire to deal with script locked legendary lords.

Growth implemented