Changes in set permission and CLI

README.md

...client/gms-cli/src/main/java/it/inaf/ia2/gms/cli/CLI.java

...t-lib/src/main/java/it/inaf/ia2/gms/client/GmsClient.java

...n/java/it/inaf/ia2/gms/client/call/SetPermissionCall.java

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

...a/it/inaf/ia2/gms/controller/JWTWebServiceController.java

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

...main/java/it/inaf/ia2/gms/service/PermissionsService.java

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