Refactoring: RAP token passed as parameter

gms/src/main/java/it/inaf/ia2/gms/GmsApplication.java

gms/src/main/java/it/inaf/ia2/gms/authn/JWTFilter.java

gms/src/main/java/it/inaf/ia2/gms/authn/RapClient.java

gms/src/main/java/it/inaf/ia2/gms/authn/RapPrincipal.java

gms/src/main/java/it/inaf/ia2/gms/authn/SecurityConfig.java

...src/main/java/it/inaf/ia2/gms/authn/ServletRapClient.java

gms/src/main/java/it/inaf/ia2/gms/authn/SessionData.java

...main/java/it/inaf/ia2/gms/controller/UsersController.java

...main/java/it/inaf/ia2/gms/manager/GroupStatusManager.java

...a/it/inaf/ia2/gms/manager/InvitedRegistrationManager.java

.../main/java/it/inaf/ia2/gms/manager/MembershipManager.java

...main/java/it/inaf/ia2/gms/manager/PermissionsManager.java

gms/src/main/java/it/inaf/ia2/gms/service/SearchService.java

gms/src/main/resources/auth.properties

gms/src/test/java/it/inaf/ia2/gms/authn/SessionDataTest.java

.../inaf/ia2/gms/manager/InvitedRegistrationManagerTest.java

...af/ia2/gms/manager/PermissionsManagerIntegrationTest.java

...a/it/inaf/ia2/gms/manager/UserAwareComponentTestUtil.java

...inaf/ia2/gms/persistence/NestedGroupsIntegrationTest.java

.../test/java/it/inaf/ia2/gms/service/SearchServiceTest.java