Cleanup in the 3D section

I have created two new sections in the 3D category to cleanup a bit and to make it easier to find things. There is a furniture section now. And a special architectural section. This architectural section contains now everything architectural that is not building or buildingpart. Fences for example, or doors, or obelisks. Stuff like that. The buildings section now only contains what is a full building or a building part.