This version introduces Loot and Inventory systems along with graphical polish.

Changelog:
• Loot System
• Inventory GUI
• Optimizations: GUI, Graphics, Initialization Scripts
• Graphical polish
• Added option to load 2d main menu instead of 3d. It can be changed via conf.txt:
main_menu_scene = 3 - for 3d scene,
main_menu_scene = 2 - for 2d scene,
main_menu_scene = 1 - for simple logo and background