[Bf-docboard] Modelling chapter refactoring

[Bastien Montagne]

Hi every body

I’ve updated my proposition for refactoring the “modelling” chapter 
(“meshes” part is now quite finished, small modif on “objects” and 
“manipulation in 3D space” – I just began the work on curves/surfaces…).

Of course, all this is in the sandbox 
(http://wiki.blender.org/index.php/Meta:Sandbox/Modelling_Refactor/Manual), 
with detailed explanations.

I will continue the work, and hope to propose a “definitive complete” 
version in about one or two weeks – but I’m nevertheless waiting for 
your comments and suggestions ;)

Regards,
Bastien.