Better crafting menu, and game options menu

This release revamps the crafting menu to use libgdx scene2d, this will allow the gui to scale on smaller displays, unlike before. This also adds a game options menu which allows disabling/enabling of game options such as fullscreen, and vsync, more to come later.

Known bugs:

• ConcurrentModificationException may be thrown when crafting, this should be fixed soon
• Inventory is still not aligned to center of screen