Big island layout change

WARNING! This update breaks compatibility with older saves!

• big island layout update: now it is divided by a river (player starts on the green side the other side is more desert-like)
• change of game balance and locations of animals, plants, items, etc.
• added bridge building on the river
• compendium split into 2 categories: sources and materials
• fruits and vegetables added to compendium
• added bears outside caves
• foxes split into white (docile) and black (aggressive)
• updated terrain textures
• added specularity textures support for terrain shader
• optimized processing of animals and plants queues
• added particle effects: sparks and sand dust
• better frame time calculations for simulation processing (less visual stutter)
• optimized map drawing
• many bugs fixed
• various optimizations