Correction orthographe/accord.
ajout d'un test à propos de l'affichage sur les bulletins.
Merge branch 'release-1.6.0' into release-1.6.1
Merge branch 'release-1.6.1' into release-1.6.2
Merge branch 'release-1.6.2' into release-1.6.3

Conflicts:
	cahier_notes/toutes_notes.php