message: clean code: rename list -> litItem
diff: @@ -22,7 +22,7 @@ export class ListComponent implements OnInit {
  loadItems(){
  this.listService.getListItems().subscribe(
  - (list:IListItem[])=>{this.listItems$.next(list)},
  + (listItem:IListItem[])=>{this.listItems$.next(listItem)},
  error => {
  this.warningMessageOpen = true;
  this.warningMessageText = `Request to add list item failed: ${error}`;
  