title: Angular DataTable DTColumnBuilder default value for null
body: <p>How to set a default value when null is occur</p>
  
  <pre><code> $scope.dtOptions = DTOptionsBuilder
                      .fromSource('api/Restt/List');
                  $scope.dtColumns = [
                      DTColumnBuilder.newColumn('modifT').withTitle('Date &amp; Time')
  </code></pre>