fix lecture
adding summary slide on the first part of the C++ teaching
adding new slides on structure and class
fix particule name
adding underscore for function arguments
adding slides on data encapsulation
adding slides for C++ ctro/dtor
adding summary slide on C++ class
adding math escape to minted env.
adding slide on operator overloading
add slides on inheritance (first part)
adding second part on C++ inheritance
adding slides on STL and templates
Merge xgarrido's branch