title: Datatable row grouping with hide option
body: <p>In my Datatable, I have most rows with unique value of ID but some rows have the same value. For the rows having same value, I would like to show only one row with that ID and hide all other rows. The one row that is displayed, should have a button to allow other rows of the same id to be visible.</p>
  
  <p>As seen in this example : <a href="https://datatables.net/examples/advanced_init/row_grouping.html" rel="nofollow">https://datatables.net/examples/advanced_init/row_grouping.html</a></p>
  
  <p>I don't want grouping for ids that are unique and for duplicate IDs show only one row, with additional rows shown through a button. </p>