title: sopt value to ignore case sensitivity
body: <p>In my struts2jquery grid I've given</p>
  
  <pre><code>&lt;sj:gridColumn name="processName" index="processName" title="Process Name" search="true" searchoptions="{sopt: ['bw','cn']}"/&gt;
  </code></pre>
  
  <p>For sopt we've values like </p>
  
  <p><code>{sopt:['eq','ne','lt','le','gt','ge','bw','bn','in','ni','ew','en','cn','nc']}</code></p>
  
  <p>Now I want to get the data in grid by ignoring the letter case. But it is filtering data if we search in the same way we stored. i.e; (say) If I stored data starting with 'D' it won't filter data starting with 'd'. How can I solve this. Is there any option for doing that?</p>