title: Fixed row on the bottom of grid
body: <p><img src="https://i.stack.imgur.com/zolZf.png" alt="enter image description here">
  I have summary row in my table. But user can see it only when he will scroll down all grid. But it could be better, if summary row will be fixed at the bottom of the grid, and it will be visible always, when the grid is shown. How can I modify it? </p>