Ctsr prereq

See merge request !3

# Conflicts:
#   application/main.cpp
#   src/model/constraints/prerequisitesConstraints.cpp

Solve the #5 issue

Each comp has its own value  for each coruses

Ajout mut + cross

See merge request !2

# Conflicts:
#   application/main.cpp

Mostly due to a bad vector access in the overriden operator<<