Demonstrates:
          The container which the grid is being created in needs to be in the DOM and participate in layout
          (can be 'visibility:hidden' but not 'display:none') in order for SlickGrid to be able to make certain
          measurements and initialize event listeners.  Normally, this is done when a SlickGrid instance is 
          being created.  Optionally, you can defer the initialization until the above condition is met and call
          the grid.init() method explicitly.  To use explicit initialization, set the explicitInitialization
          option to true.
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