Describe the bug
With NVDA, space bar does not select row in ui-grid

To Reproduce
Steps to reproduce the behavior:

1. Go to http://ui-grid.info/docs/#!/tutorial/Tutorial:%20210%20Selection
2. Focus on checkbox, press Space, row selection is successful
3. Try above with NVDA
4. Row selection with Space does not work with NVDA

Desktop (please complete the following information):

• Browser: Mozilla with NVDA