Fixed lint errors and add lint fix script

src/app/shared/object-grid/grid-thumbnail/grid-thumbnail.component.ts

@@ -33,7 +33,7 @@ export class GridThumbnailComponent implements OnInit {
     if (hasValue(this.thumbnail) && hasValue(this.thumbnail._links) && this.thumbnail._links.content.href) {
       this.src = this.thumbnail._links.content.href;
     } else {
-      this.src = this.defaultImage
+      this.src = this.defaultImage;
     }
   }
 

src/app/shared/object-grid/object-grid.component.ts

@@ -135,7 +135,7 @@ export class ObjectGridComponent implements OnInit {
    */
   @Output() sortFieldChange: EventEmitter<string> = new EventEmitter<string>();
   data: any = {};
-  columns$: Observable<ListableObject[]>
+  columns$: Observable<ListableObject[]>;
 
   constructor(private hostWindow: HostWindowService) {
     this._objects$ = new BehaviorSubject(undefined);

src/app/shared/object-grid/search-result-grid-element/item-search-result/publication/publication-search-result-grid-element.component.spec.ts

@@ -151,5 +151,5 @@ export function getEntityGridElementTestComponent(component, searchResultWithMet
         });
       });
     });
-  }
+  };
 }