Open beta balance patch

Hello again. Today I have some mostly balance related changes for the open beta. These are focused around reducing the influence of resource deposits later in the game, but also making them more important in certain ways. Here is the changelog:

Changelog

• Extraction now limited by technology

• Most resource buildings give only linear improvements or are capped by other resources

• Resources have been "renamed" to economy sectors to more adequately convey their purpose

• Resource trades from other nations no longer regionally specific

• Corporate faction now gives debt effect reduction

• Laborer faction now multiplicatively increases/decreases development

• Reactor limit decreased to 1

• Power grid is easier to build

• Fusion, cold fusion, antimatter reactors now provide linear, but larger bonuses

• Added Mech land units which are around the size of a naval destroyer

• Reduced cost of artillery