More fiddling with bus stops.

More fiddling with bus stops. The white one is a modded Linda Kellie stop. The one next to it I found somewhere I can't remember. I redid the type 1 stop so that it now has advertising and a protective mesh at the back. I also removed the bases. Now the roofs are the root prims for all. Also two styles of sign - a LK based one, and modd of that which is less "posh".