Xmas update (0.11.5)

- Christmas tree is installed on the central square
- Added animations and sounds for wild animals
- Added new event
- Event buttons locked for one second after appearing for preventing accidentally clicks
- Free peasants will now collect items from destroyed chests
- Added buttons for destroying buildings, farms and trees in right bottom peasant menu for corresponding professions
- Fixed issues with hunter logic when wild animal is near
- Fixed an issue when you can build main square over mountains or water
- Fixed unstable crashed after loading a game
- Fixed unstable issue when peasant can be simultaneously work and "sleep" in bed