Add an empty form to add a student.
Complete AddEtudiantForm.
Delete id argument in Etudiant constructor.
Complete Add function id AddEtudiantForm.
Add resx file of Add EtudiantForm.
Open new AddForm from ListEtudiantForm.
Add a DataSource to get values of Classe to show in ComboBox to the AddEtudiantForm.
Add SQL AddEtudiant function.
Return to normal constructor for Etudiant.
Create Ajouter request for SQL and select new id for new student.
Merge branch 'develop' of https://github.com/Odonno/AtelierGit.git