update summary slide
merge Yann's branch
fix back some typo
remove question
kozmetix
use mart quote
remove useless class member
Merge xgarrido's branch

Conflicts:
	slides/slide_struct_class.org
	td/td_classes.org
	td/td_specificite_c++.org
Reconstruire les pdf quand README.org est modifié
Suppression de code inutile