[e2e] Added document list actions [E2E] (#3676)

* [e2e] Added document list actions e2e 1

* [e2e - actions] added another test

lib/core/context-menu/context-menu-holder.component.ts

@@ -32,6 +32,7 @@ import { ContextMenuService } from './context-menu.service';
         <mat-menu #contextMenu="matMenu" class="context-menu">
             <ng-container *ngFor="let link of links">
                 <button *ngIf="link.model?.visible"
+                        [attr.data-automation-id]="'context-'+((link.title || link.model?.title) | translate)"
                         mat-menu-item
                         [disabled]="link.model?.disabled"
                         (click)="onMenuItemClick($event, link)">

lib/core/viewer/components/pdfViewer.component.html

@@ -37,7 +37,7 @@
 
         <ng-container *ngIf="allowThumbnails">
             <button mat-icon-button
-                    data-automation-id='adf-thumbnails-button'
+                    data-automation-id="adf-thumbnails-button"
                     [disabled]="isPanelDisabled"
                     (click)="toggleThumbnails()">
                 <mat-icon>dashboard</mat-icon>