Joanna | Add an endpoint to retrieve all the missions for a volunteer
new files
other one
Merge branch 'master' of https://github.com/NicolasLevaique/nuit-info

Conflicts:
	src/main/java/com/nuit/backend/ControllerOffer.java
	src/main/java/com/nuit/backend/ControllerOrganization.java
	src/main/java/com/nuit/backend/ControllerVolunteer.java
Merge branch 'master' of https://github.com/NicolasLevaique/nuit-info