Tentative version of Cylinder->Plane Interaction that places the
interacting particle on a (sub-) disk on the plane
Some informative commenting
Correctly handle Cylinder->Plane transfer in BD mode structure functions
Small fix
Update shell overlap ignore lists
Make Cyl.SurfacePlanarSurfaceInterfaceSingle an interaction from plane to disk

Does not work completely yet, have to fix shellscaling, in particular
ignore the cylinder, which is now not a priori visible to the shell any more.