Fix errors with missing map initialization

Author: atarix83

src/app/shared/browse-most-elements/browse-most-elements.component.html

@@ -22,9 +22,7 @@
   </ng-container>
 
 </div>
-<div
-  class="row justify-content-center"
-  *ngIf="topSection.showAllResults && (discoveryConfigurationsTotalElementsMap === null || discoveryConfigurationsTotalElementsMap.get(paginatedSearchOptions.configuration) > 0)" class="d-flex justify-content-center">
+<div *ngIf="topSection?.showAllResults && (discoveryConfigurationsTotalElementsMap === null || discoveryConfigurationsTotalElementsMap.get(paginatedSearchOptions.configuration) > 0)" class="d-flex justify-content-center">
   <button type="button" class="btn btn-link" (click)="showAllResults()">
     {{ "home.top-section.view-results" | translate }}
   </button>

src/app/shared/browse-most-elements/browse-most-elements.component.ts

@@ -84,7 +84,7 @@ export class BrowseMostElementsComponent implements OnInit, OnChanges {
 
   @Input() topSection: TopSection;
 
-  @Input() discoveryConfigurationsTotalElementsMap: Map<string, number>;
+  @Input() discoveryConfigurationsTotalElementsMap: Map<string, number> = new Map();
 
 
   paginatedSearchOptions$ = new BehaviorSubject<PaginatedSearchOptions>(null);

src/app/shared/browse-most-elements/images-browse-elements/images-browse-elements.component.ts

@@ -34,6 +34,7 @@ import { AbstractBrowseElementsComponent } from '../abstract-browse-elements.com
     ThemedTypeBadgeComponent,
     RouterLink,
     NgxSkeletonLoaderModule,
+    NgIf,
     NgForOf,
     NgIf,
   ],