Insert missing semicolons
TODO: test with multiple tables
Basic AJAX error handling

Displays a message if JSON fails to load.
Allow applying plugin to multiple tables
Implement $.removeKivaTable function

Removes the table from KivaSort.table, clears the data, then destroys
the DataTable instance.
Add KivaSort.refreshJSON function

This allows the JSON to be re-fetched, for example upon an AJAX error.

Add a "Try again" link to the AJAX error message.
Add second table to index for testing