New major feature

Added cities with their own personality. They may raid or trade with other cities and became big. Or be worshipers to generate lots of energy for the player. You can change city personality through random events.

Other changes and fixes

• Added edge of the world sprite.
• AI now uses action Create New Grounds.
• Increased sandbox world size.
• Mana renamed to energy and changed energy orb sprite to cleaner one.
• Fixed in game action buttons being unclickable.