Re #61 - Complete structure of WarFoundry API objects * Remove min/max from EquipmentItem and add description * Add min/max numbers and percentages to UnitEquipmentItem * Make Race schema define min/max number without the ratio (which is the percentage) * Replace use of EquipmentItem with UnitEquipmentItem because of increased use of UnitEquipmentItem for unit-specific data * Use doubles instead of floats for equipment amounts * Distinguish between ratio and absolute limits * Delete UnitEquipmentItemObj helper class that was purely used for UI Re #9 - Use smaller methods * Deprecate long Race and EquipmentItem constructors and ensure all getters/setters exist Also: * Migrate Unit to using genericed collections * Always use GameSystem object for Race, not ID string