title: Hide p-column header highlight in PrimeNG DataTables
body: <p>How do I hide the column-header highlight (blue) that persists after a column is clicked for sorting purposes? I have no need to 'select' the column when a user simply clicks it to change the sort order.</p>
  
  <p>Is there an attribute that I can use to switch-off column selection, similar to the way row selection can be disabled with 'selectionMode="none"'?</p>