Made quite some progress on the PlayerData and GUI controllers.
Merge branch 'Niels' into develop

Conflicts:
	Assets/Models/Tower&TrapsModels/Materials/MetalBare0132_8_S.mat.meta
	Assets/Models/Tower&TrapsModels/Materials/unnamed.mat.meta
	Assets/Sprites/GUI/Items/Boots/boots1.png.meta~HEAD