IfcOpenShell

Add more instruction for python version mismatch error handler

Indicate that Blender needs a restart if BBIM was reinstalled

Also consider non elements when guessing a false origin

Merge branch 'v0.8.0' of https://github.com/IfcOpenShell/IfcOpenShell into v0.8.0

Added support for mapping material inside the UI. Output file name and file extension taken from input. Plus Fixed some bugs mentioned in #5033