Bugfix on permission removal; various small improvements

gms-ui/src/components/GenericSearchResults.vue

gms-ui/src/components/Main.vue

gms-ui/src/components/MembersPanel.vue

gms-ui/src/components/PermissionsPanel.vue

gms-ui/src/components/User.vue

gms-ui/src/components/UserSearchResult.vue

gms-ui/src/store.js

...in/java/it/inaf/ia2/gms/controller/MembersController.java

...ava/it/inaf/ia2/gms/controller/PermissionsController.java

...ain/java/it/inaf/ia2/gms/controller/SearchController.java

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

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

...va/it/inaf/ia2/gms/model/response/UserSearchResponse.java

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

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

.../inaf/ia2/gms/controller/JWTWebServiceControllerTest.java