Renommage :
Droit -> Droits
DroitDAO -> DroitsDAO
Gestion des droits
Merge branch 'master' of https://github.com/thomn/projet_qcm

Conflicts:
	QCM/src/jtaga/jee/qcm/bs/LoginBS.java
	QCM/src/jtaga/jee/qcm/exceptions/JtagaException.java