working to fix all tests
now number of wrong tests reduced to +- 12

wrong tests in
  <script src="spec/plugins/contextMenuSpec.js"></script>
  cannot unbind events for hiders

  <script src="spec/renderers/checkboxRendererSpec.js"></script>
  dblclick problem

 <script src="spec/plugins/manualColumnMoveSpec.js"></script>
 <script src="spec/plugins/manualColumnResizeSpec.js"></script>
event delegate problem