Added new import config rule: AlwaysPresentImageMaps so it will add entries for the regular map inputs on a material, even if they weren't actually found
Disabled a number of inactive popup menu items
Added Create New Module to normal add asset popup for more obvious/simplified use-flow
Adjusted the editor loading logic so it will properly display the loading splash to inform loading is happening instead of just lagging
Adjusted the assimp shape loader code so if it doesn't find a texture, and thus just sets a material value as the material color, it has a more parsable formatting
