title: primeNG Datatable does not update when datasource changes
body: <p>I have an issue with primeNG datatable, when updating the datasouce the datatable does not automatically update.
  I have two datatables in different components that are communicating via a service, when clicking on one row in the first datatable a method is called which updates the datasource, however the second datatable does not recognize it. 
  Maybe someone had a similar issue or has an example of how to solve issues like that with primeNG datatable?
  I would appreciate any help. </p>