title: DevExpress XtraGrid - how to disable cell merging
body: <p>I'm using DevExpress XtraGrid and faced with problem. When cells in under the same column have the same values, they merge in one. But i don't need it. 
  Here is printscreen of table:
  <img src="https://i.stack.imgur.com/UNdoD.png" alt="printscreen of table"></p>
  
  <p>There are two rows. Last two columns have merged. How can i separate these rows???</p>