(build 0.6.3) Trade rework — Once Upon The Universe Steam update #1328981

Reworked civilization trade. Civilizations now sell their current production surplus, purchase shortages at shared market prices. Resource-based diplomatic jealousy now builds gradually, fades faster when shortages are resolved, and identifies the resources causing each penalty in its tooltip. Minerals are now used both in production and trade, where they act as a common currency. Fixed planetary habitability temperature scoring so worlds near the ideal temperature range now improve progressively instead of abruptly jumping from 50% to 100%. Fixed the system mouse cursor reappearing after a wireless mouse was turned off and back on during gameplay. Civilizations will now establish their own production capacity for required industrial goods before constructing factories that depend on them.