title: Tablesorter Filter with multiple "values" in cell
body: <p>I'm using tablesorter with Filter widget but i have a problem with the filter.</p>
  
  <p>I'm using filter-select class in the header and it's working fine.</p>
  
  <p>Problem is i have the cells in which there can be more than 1 data, but filter is getting the text all togheter instead of each value separate. </p>
  
  <p>Just to be clear:</p>
  
  <pre><code>&lt;tr&gt;
      &lt;td&gt;John Wayne&lt;/td&gt;
      &lt;td&gt;
              &lt;div class="rip"&gt;Riplet&lt;/div&gt;
              &lt;div class="rip"&gt;Pipe&lt;/div&gt;
      &lt;/td&gt;
  &lt;tr&gt;
  </code></pre>
  
  <p>The fitler select appears with 1 option like this "RipletPipe", but i need it to be 2 options "Riplet" and "Pipe".</p>
  
  <p>I've tried with functions etc but I don't seem to get to it.</p>
  
  <p>Main problem is I think that the data in the "multiple value cell" is dynamic.</p>
  
  <p>Please help me :)</p>