Just a few changes and fixes to the game.

- Added Smeltery (to the Prologue)
- Added Sheep farm and Textile factory (to the Prologue)
- Added indicator that shows which buildings were destroyed during the earthquake
- Added more work to Lumberjacks (now they plant more trees)
- Fixed inconsistencies with the food counter
- Removes a possibility to build a second Trading dock
- Fixed some bird AI
- Fixed minor bugs

Thank you all for your feedback and reviews.
It makes the game better 💖
(c) yo_serjio