[ADF-1039] Search results highlighting (#2080)

* Provide a way to highlight the searched word

* Add unit test

ng2-components/ng2-alfresco-search/src/components/alfresco-search-autocomplete.component.ts

@@ -52,6 +52,9 @@ export class AlfrescoSearchAutocompleteComponent implements OnInit, OnChanges {
     @Input()
     resultType: string = null;
 
+    @Input()
+    highlight: boolean = false;
+
     @Output()
     fileSelect: EventEmitter<any> = new EventEmitter();