landing & search: add label for authors row

utils/authors/showAuthors.component.ts

@@ -78,6 +78,9 @@ import {properties} from "../../../../environments/environment";
     </ng-template>
     
     <div *ngIf="authors" class="uk-height-max-medium uk-overflow-auto uk-text-small uk-text-emphasis uk-flex uk-flex-wrap">
+      <span class="uk-text-meta uk-margin-xsmall-right">
+        Authors:
+      </span>
       <ng-container *ngFor="let author of authors.slice(0, viewAll?authors.length:authorsLimit) let i=index">
         <ng-container *ngTemplateOutlet="author_template; context: { author: author, i:i, italic: true}"></ng-container>
       </ng-container>