title: ng-grid cellTemplate doesn't work with CUSTOM_FILTERS included
body: <p>When including a cellTemplate in a column definition, if that cellTemplate includes CUSTOM_FILTERS, it causes angular to puke:</p>
  
  <p>Error: Syntax Error: Token 'CUSTOM_FILTERS' is an unexpected token at column 14 of the expression [row.entity.1 CUSTOM_FILTERS] starting at [CUSTOM_FILTERS]</p>
  
  <p>Even using the default cellTemplate in a column def results in the same error. </p>
  
  <pre><code>cellTemplate = "&lt;div class=\"ngCellText\" ng-class=\"col.colIndex()\"&gt;&lt;span ng-cell-text&gt;{{COL_FIELD CUSTOM_FILTERS}}&lt;/span&gt;&lt;/div&gt;"
  </code></pre>