New creature preferences

• Fixed bugs related to item preference display in the pen.
  
• Changed creature preferences, rabbits are best at surface items, squirrels are best at tree items, moles are best at ground items.
• Watchtower resource cost box is less transparent when you can afford it.
• You can now click on the watchtower to revisit the end screen.
• ǝpʎlƆ pǝʌoɯǝᴚ

Balance Changes

• Lightning: Capacity, 1 item > 0-1 items.
• Chungus Bunny: Capacity, 2-4 items > 2-5 items.