Allow accessing nested data, allow removing rowsPerPageOptions in pagination display, and various fixes.

• Added ability to access nested data, e.g. const data = [{ phone: { home: '215-555-5555', cell: '313-555-5555' } }]; const columns = [{ name: 'phone.home' }, { name: 'phone.cell' } ];
• Added ability to remove rowsPerPageOptions in pagination by supplying only one option or an empty array
• Fix select toolbar height so that it is the same height as the main toolbar
• Provide the correct order in the metadata array in customBodyRender
• Fix pagination bug when the page set was higher than the total number of pages available