removed stl and fcstd geometries from spec
diked out STL and FCstd bases from bolttools
diked out STL and FCstd geometries from backends
removed all fcstd parts

replacements for Vrail extrusions are in place. Also added more wheels.
For T-Slot extrusions no replacement yet, and fcstd files are still
there.
drawings for vslot profiles and wheels
set screw data from solidworks branch
INP beams can now be added as arch structures
Merge branch 'basecleanup'