added the dropdown for rowsPerPageOptions
removed a test line
replaced _getRows() calls with the public reloadGrid()
Made sure the js wouldn't choke if the header and footer don't exist
Merge pull request #22 from freemanirl/rowsPerPageOptions

Rows per page options
Merge pull request #23 from freemanirl/variousFixes

replaced _getRows() calls with the public reloadGrid()