title: Nested ui-grid (grid inside cellTemplate)
body: <p>I'm preparing a grid which have a column that contain another grid, i tried it with ngGrid it works according to this plunkr link :</p>
  
  <pre><code>    $scope.updateGrid = function() {$scope.gridOptions = {
      data: 'facdata',
        rowHeight: $scope.fac1data.length * $scope.rowHeight,
        columnDefs: [
          {field: 'examname',displayName: 'Exam Name'},
          {field: '', displayName: 'Subjects' , cellTemplate: '&lt;div  ng-grid="gridOptions1"  &gt;&lt;/div&gt;'
        }]
      };
    }   
  </code></pre>
  
  <p><a href="http://plnkr.co/edit/wSd880e7cm2BlOkfdrAW?p=preview" rel="nofollow">Plunkr link</a></p>
  
  <p>The previous link was done with ngGrid But when i tried to prepare the equivalent of this using ui-grid,
  i got a problem (a.uiGrid is undefined).</p>
  
  <p>Please help me for this issue
  thanks</p>