Handled permissions on UI

...kend/src/main/java/it/inaf/ia2/vospace/ui/UserFilter.java

...ain/java/it/inaf/ia2/vospace/ui/VOSpaceUiApplication.java

...va/it/inaf/ia2/vospace/ui/controller/NodesController.java

...ackend/src/main/java/it/inaf/ia2/vospace/ui/data/Job.java

...c/main/java/it/inaf/ia2/vospace/ui/data/ListNodeData.java

...rc/main/java/it/inaf/ia2/vospace/ui/service/NodeInfo.java

...ain/java/it/inaf/ia2/vospace/ui/service/NodesService.java

...t/inaf/ia2/vospace/ui/controller/NodesControllerTest.java

vospace-ui-frontend/src/api/mock/data/nodes/folder1.html

vospace-ui-frontend/src/api/mock/data/nodes/folder1.json

vospace-ui-frontend/src/api/mock/data/nodes/folder2.html

vospace-ui-frontend/src/api/mock/data/nodes/folder2.json

vospace-ui-frontend/src/api/mock/data/nodes/root.html

vospace-ui-frontend/src/api/mock/data/nodes/root.json

vospace-ui-frontend/src/api/mock/index.js

vospace-ui-frontend/src/components/Main.vue

vospace-ui-frontend/src/store.js