Purchasable attribute points 1.1

Updated costs:
AP = received attribute points

Gold:
Antiquity 900 + AP * 50
Exploration 1700 + AP * 75
Modern 2600 + AP * 100

Influence:
Antiquity 900 + AP * 50
Exploration 1700 + AP * 75
Modern 2600 + AP * 100


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Special thanks to TripleExit and MutilationWave for the feedback.