fix: performance degradation when scrolling

src/app/modules/data/list/data-list-item.component.ts

@@ -25,12 +25,17 @@ import {DataRoutingService} from '../data-routing.service';
   templateUrl: 'data-list-item.html',
 })
 export class DataListItem {
+  /**
+   * Whether or not the list item should show a thumbnail
+   */
+  @Input() hideThumbnail = false;
+
   /**
    * An item to show
    */
   @Input() item: SCThings;
 
-  constructor(private dataRoutingService: DataRoutingService) {}
+  constructor(private readonly dataRoutingService: DataRoutingService) {}
 
   /**
    * Emit event that an item was selected