Merge pull request #4730 from alanorth/collection-mapper-trash-icon-7x

[Port dspace-7_x] src/app: use correct icon in item mapper

src/app/shared/object-select/collection-select/collection-select.component.html

@@ -36,7 +36,7 @@
             [ngClass]="{'btn-danger': dangerConfirm, 'btn-primary': !dangerConfirm}"
             [dsBtnDisabled]="selectedIds?.length === 0"
             (click)="confirmSelected()">
-      <i class="fas fa-trash"></i> {{confirmButton | translate}}
+      <i class="fas" [ngClass]="{'fa-trash': dangerConfirm, 'fa-save': !dangerConfirm}"></i> {{confirmButton | translate}}
     </button>
   </div>
 </ng-container>