[DURACOM-453] fix observable issue, add full projection

Author: FrancescoMolinaro

src/app/shared/menu/providers/edit-item-details.menu.ts

@@ -41,7 +41,6 @@ export class EditItemDetailsMenuProvider extends DSpaceObjectPageMenuProvider {
     return this.editItemService.searchEditModesById(dso.id).pipe(
       getAllSucceededRemoteDataPayload(),
       getPaginatedListPayload(),
-      startWith([]),
       map((editModes: EditItemMode[]) => {
         return editModes.map(editMode => {
           return {

src/app/submission/edit/submission-edit.component.ts

@@ -185,7 +185,7 @@ export class SubmissionEditComponent implements OnDestroy, OnInit {
         this.canDeactivate = res;
       }),
       this.route.paramMap.pipe(
-        switchMap((params: ParamMap) => this.submissionService.retrieveSubmission(params.get('id'), ['allLanguages']).pipe(
+        switchMap((params: ParamMap) => this.submissionService.retrieveSubmission(params.get('id'), ['full','allLanguages']).pipe(
           // NOTE new submission is retrieved on the browser side only, so get null on server side rendering
           filter((submissionObjectRD: RemoteData<SubmissionObject>) => isNotNull(submissionObjectRD)),
           mergeMap((submissionObjectRD: RemoteData<SubmissionObject>) => combineLatest([