title: In a RadListView, how to remove extra space between item columns?
body: <p>Whith a RadListView and grid or staggered layout, how can I achieve that on the sides the margin is the same as the space between two columns:</p>
  
  <pre><code>|screen edge                     screen edge|
  |                                           |
  |20px |------------|20px |------------|20px |
  |     |item1       |     |item2       |     |
  |     |            |     |            |     |
  |     |            |     |            |     |
  |     |            |     |            |     |
  |     |------------|     |------------|     |
  |                                           |
  </code></pre>