Fixed tests and database setup

README.md

database/Dockerfile

database/user.sql

gms-ui/src/components/GroupsPanel.vue

gms-ui/src/components/Main.vue

gms/pom.xml

gms/src/main/java/it/inaf/ia2/gms/persistence/GroupsDAO.java

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

...rc/main/java/it/inaf/ia2/gms/service/PermissionUtils.java

gms/src/main/resources/application.properties

gms/src/test/java/it/inaf/ia2/gms/DataSourceConfig.java

gms/src/test/java/it/inaf/ia2/gms/GmsApplicationTests.java

...java/it/inaf/ia2/gms/controller/GroupsControllerTest.java

gms/src/test/java/it/inaf/ia2/gms/model/PermissionTest.java

.../test/java/it/inaf/ia2/gms/persistence/GroupsDAOTest.java

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

.../java/it/inaf/ia2/gms/persistence/PermissionsDAOTest.java

...est/java/it/inaf/ia2/gms/service/PermissionUtilsTest.java

...af/ia2/gms/service/PermissionsServiceIntegrationTest.java