Updated the documentation wrt the next changes:
- removed OrientableNormal_3, PointWithOrientableNormal_3, ReconstructionTriangulation_3, Reconstructio
nVertexBase_3 concepts.
- classes Orientable_normal_3, Reconstruction_triangulation_3 abd Reconstruction_vertex_base_3 are not
documented anymore.
- For free functions provided with 2 variants mutable/non mutable, removed the non mutable one.