3d Floor Planner> Allow importing of many 2d products from Mood/Room boards

Add add a "jpg block" function to DF 3d Floor Planner. This allows for the common need to add custom art to a space. Additional products that can be created with jpg blocks are any objects that are rectangular, including console tables, etc. This, combined with the ability to link to 3d warehouses, would be a game-changer.