message: Removed required Validator
diff: @@ -19,7 +19,7 @@ export class ProductDetailsComponent implements OnInit, OnDestroy {
  public author: string
  public reviews$: any
  public userSubscription: any
  - public reviewControl: FormControl = new FormControl('',[Validators.required,Validators.maxLength(160)])
  + public reviewControl: FormControl = new FormControl('',[Validators.maxLength(160)])
  constructor (private dialog: MatDialog,
  @Inject(MAT_DIALOG_DATA) public data: any, private productReviewService: ProductReviewService,
  private userService: UserService) { }
  