Enhancement to grid filters, etc.

Suggest line 734 be changed from
`dom: 'Blfrtip',`
to
`dom: '<"row"<"col-md-2 pt-5 center csvTarget"><"col-md-2 pt-5 center"B><"col-md-3 pt-5 center"f><"col-md-5 center pl-6"Q>>t<"row"<"col"l><"col"i><"col"p>>',`

The latter includes the additional search builder feature & also gives you a place to throw an export button (in this example, csvTarget).