Updated configuration.

config/config.example.yml

@@ -168,9 +168,8 @@ browseBy:
   fiveYearLimit: 30
   # The absolute lowest year to display in the dropdown (only used when no lowest date can be found for all items)
   defaultLowerLimit: 1900
-
-# If true, thumbnail images for items will be added to search and browse result lists.
-showItemThumbnails: false
+  # If true, thumbnail images for items will be added to search and browse result lists.
+  showItemThumbnails: true
 
 # Item Config
 item:

src/app/browse-by/browse-by-metadata-page/browse-by-metadata-page.component.ts

@@ -123,7 +123,7 @@ export class BrowseByMetadataPageComponent implements OnInit {
                      protected dsoService: DSpaceObjectDataService,
                      protected paginationService: PaginationService,
                      protected router: Router) {
-    this.embedThumbnail = environment.showItemThumbnails;
+    this.embedThumbnail = environment.browseBy.showItemThumbnails;
   }
 
   ngOnInit(): void {

src/app/entity-groups/journal-entities/item-list-elements/search-result-list-elements/journal-issue/journal-issue-search-result-list-element.component.ts

@@ -22,7 +22,7 @@ export class JournalIssueSearchResultListElementComponent extends ItemSearchResu
 
   ngOnInit(): void {
     super.ngOnInit();
-    this.showThumbnails = environment.showItemThumbnails;
+    this.showThumbnails = environment.browseBy.showItemThumbnails;
   }
 
 }

src/app/entity-groups/journal-entities/item-list-elements/search-result-list-elements/journal-volume/journal-volume-search-result-list-element.component.ts

@@ -22,7 +22,7 @@ export class JournalVolumeSearchResultListElementComponent extends ItemSearchRes
 
   ngOnInit(): void {
     super.ngOnInit();
-    this.showThumbnails = environment.showItemThumbnails;
+    this.showThumbnails = environment.browseBy.showItemThumbnails;
   }
 
 }

src/app/entity-groups/journal-entities/item-list-elements/search-result-list-elements/journal/journal-search-result-list-element.component.ts

@@ -22,7 +22,7 @@ export class JournalSearchResultListElementComponent extends ItemSearchResultLis
 
   ngOnInit(): void {
     super.ngOnInit();
-    this.showThumbnails = environment.showItemThumbnails;
+    this.showThumbnails = environment.browseBy.showItemThumbnails;
   }
 
 }

src/app/entity-groups/research-entities/item-list-elements/search-result-list-elements/org-unit/org-unit-search-result-list-element.component.ts

@@ -22,7 +22,7 @@ export class OrgUnitSearchResultListElementComponent extends ItemSearchResultLis
 
   ngOnInit(): void {
     super.ngOnInit();
-    this.showThumbnails = environment.showItemThumbnails;
+    this.showThumbnails = environment.browseBy.showItemThumbnails;
   }
 
 }

src/app/entity-groups/research-entities/item-list-elements/search-result-list-elements/person/person-search-result-list-element.component.ts

@@ -32,7 +32,7 @@ export class PersonSearchResultListElementComponent extends ItemSearchResultList
 
   ngOnInit(): void {
     super.ngOnInit();
-    this.showThumbnails = environment.showItemThumbnails;
+    this.showThumbnails = environment.browseBy.showItemThumbnails;
   }
 
   /**

src/app/entity-groups/research-entities/item-list-elements/search-result-list-elements/project/project-search-result-list-element.component.ts

@@ -22,7 +22,7 @@ export class ProjectSearchResultListElementComponent extends ItemSearchResultLis
 
   ngOnInit(): void {
     super.ngOnInit();
-    this.showThumbnails = environment.showItemThumbnails;
+    this.showThumbnails = environment.browseBy.showItemThumbnails;
   }
 
 }

src/app/shared/object-list/search-result-list-element/collection-search-result/collection-search-result-list-element.component.ts

@@ -24,7 +24,7 @@ export class CollectionSearchResultListElementComponent extends SearchResultList
 
   ngOnInit(): void {
     super.ngOnInit();
-    this.showThumbnails = environment.showItemThumbnails;
+    this.showThumbnails = environment.browseBy.showItemThumbnails;
   }
 
 }

src/app/shared/object-list/search-result-list-element/community-search-result/community-search-result-list-element.component.ts

@@ -24,6 +24,6 @@ export class CommunitySearchResultListElementComponent extends SearchResultListE
 
   ngOnInit(): void {
     super.ngOnInit();
-    this.showThumbnails = environment.showItemThumbnails;
+    this.showThumbnails = environment.browseBy.showItemThumbnails;
   }
 }

src/app/shared/object-list/search-result-list-element/item-search-result/item-types/item/item-search-result-list-element.component.ts

@@ -30,7 +30,7 @@ export class ItemSearchResultListElementComponent extends SearchResultListElemen
 
   ngOnInit(): void {
     super.ngOnInit();
-    this.showThumbnails = environment.showItemThumbnails;
+    this.showThumbnails = environment.browseBy.showItemThumbnails;
     this.itemPageRoute = getItemPageRoute(this.dso);
   }
 }

src/config/app-config.interface.ts

@@ -31,7 +31,6 @@ interface AppConfig extends Config {
   defaultLanguage: string;
   languages: LangConfig[];
   browseBy: BrowseByConfig;
-  showItemThumbnails: boolean;
   item: ItemConfig;
   collection: CollectionPageConfig;
   themes: ThemeConfig[];

src/config/browse-by-config.interface.ts

@@ -18,4 +18,9 @@ export interface BrowseByConfig extends Config {
    * The absolute lowest year to display in the dropdown when no lowest date can be found for all items
    */
   defaultLowerLimit: number;
+
+  /**
+   *  If true, thumbnail images for items will be added to search and browse result lists.
+   */
+  showItemThumbnails: boolean;
 }

src/config/default-app-config.ts

@@ -205,12 +205,11 @@ export class DefaultAppConfig implements AppConfig {
     // Limit for years to display using jumps of five years (current year - fiveYearLimit)
     fiveYearLimit: 30,
     // The absolute lowest year to display in the dropdown (only used when no lowest date can be found for all items)
-    defaultLowerLimit: 1900
+    defaultLowerLimit: 1900,
+    // Whether to add item thumbnail images to browse and search result lists.
+    showItemThumbnails: true
   };
 
-  // Whether to add item thumbnail images to browse and search result lists.
-  showItemThumbnails: false;
-
   // Item Config
   item: ItemConfig = {
     edit: {

src/environments/environment.test.ts

@@ -199,8 +199,10 @@ export const environment: BuildConfig = {
     fiveYearLimit: 30,
     // The absolute lowest year to display in the dropdown (only used when no lowest date can be found for all items)
     defaultLowerLimit: 1900,
+    // Whether to add item thumbnail images to browse and search result lists.
+    showItemThumbnails: true
   },
-  showItemThumbnails: false,
+
   item: {
     edit: {
       undoTimeout: 10000 // 10 seconds