title: JQGrid searchrules and toolbar filtering error
body: <p>I have a toolbar filter set up that works on a JQGrid of mine.  We recently got a requirement to only allow integers into this field.  I changed the colModel of the appropriate column in order to validate client side before a search takes place.  After making the changes to the javascript, the behavior has not changed.  Validation appears to not be taking place client side regardless of the input, which leads me to believe I have a misunderstanding of the search rules.  Code below</p>
  
  <p>Previous</p>
  
  <pre><code>colModel:[ ...,
                        {name:'version', search:true, stype:'text'}
  ,...,]
  </code></pre>
  
  <p>Post Change</p>
  
  <pre><code>colModel:[ ...,
                        {name:'version', search:true, stype:'text',searchrules:{required:true, integer:true}}
  ,...,]
  </code></pre>
  
  <p>Do search rules not apply to toolbar filtering?  The documentation indicates that they would, unless I'm missing a line somewhere.  </p>
  
  <p>Thanks for looking!</p>