Any space objects imported from ArchiCAD (via IFC) are rotated
by 90° around the global z-Axis. When turning the same base
shape into an other Arch object like Wall or Slab, no such error
happens.
Turns out the shape creation in Space objects is handled
differently then in other Arch objects and just copying the usual
method fixes this. I have no idea why this makes a difference.
To document why this change is necessary, a test cases is added.
Upon editing TestArch.py a number of trailing spaces have been
removed accidentally.
