Created by: zeffii
- introduces a new mode to Solid_to_Mesh node ( 
Lenient) , which is based on the FreeCAD to Blender importer by yorik, - introduces an initial FreeCAD_utils module which will eventually associate faces to material indices (colors..eventually)
 - adds a modified version of 
FCStd_read.py(FCStd_read_mod) and corresponding docs - add some utility functions to 
solid.py