modified purchase amounts based on soulCost

The power ups and power abilities are now higher cost, also there are
less souls per kill. Soul amount is currently based on size of enemy.
Merge branch 'master' of https://github.com/GoldenCity/GoldenCityGameMain4_16_9_23AM

Conflicts:
	Assets/PreFabs/CurrentlyUsedEnemies/HapryMissile.prefab
	Assets/PreFabs/CurrentlyUsedEnemies/LionPrefab.prefab
	Assets/PreFabs/CurrentlyUsedEnemies/batteringRamTest.prefab