[ADF-4401] Fix DL issues because of nested 'adf-datatable-cell' items (#4615)

* [ADF-4401] remove classname from nested items - use 'adf-content-cell' instead

* [ADF-4401] some DL display fixes

- align header cells with content cells
- columns aligned on Trashcan DL
- ellipsis on long folder names inside the content node selector
- more width on highlight cell from search-results

* [ADF-4401] use 'adf-content-cell'

- to allow ellipsis to display when a parent has 'adf-ellipsis-cell' class

* [ADF-4401] remove not used styles

* [ADF-4401] rename scss classname to have 'adf-datatable' prefix

* [ADF-4401] Add documentation for datatable

lib/content-services/document-list/components/trashcan-name-column/trashcan-name-column.component.ts

@@ -37,7 +37,7 @@ import { ShareDataRow } from '../../data/share-data-row.model';
   `,
   changeDetection: ChangeDetectionStrategy.OnPush,
   encapsulation: ViewEncapsulation.None,
-  host: { class: 'adf-datatable-cell adf-trashcan-name-column' }
+  host: { class: 'adf-datatable-content-cell adf-trashcan-name-column' }
 })
 export class TrashcanNameColumnComponent implements OnInit {
   @Input()