GroupService Test funciona, falta probar deleteGroup,
putDestinationWrongInputs i implementar put i delete card
Test GroupService fins a PUT card implementats
Tests GroupService Finalitzats
Test UserService correcte
UserService i GroupService testejats correcte i completament.
Petita modificacio estetica
Corregit bug de mongo
.
Funcionalitats votacions
Funcionalitats Votacions acabades
.
Merge branch 'sistemaVotacions' of
https://github.com/TripBoxDev/TB_Backend.git into sistemaVotacions

Conflicts:
	src/main/java/com/tripbox/services/GroupServiceImpl.java
	src/main/java/com/tripbox/services/UserServiceImpl.java