Update table_sql to support dynamic pagination

Log in as admin. Go to Site administration > Development > Make test course and create a small course . Go to the Participants page of that course. Sort the course participants table by email address so you can keep track of the users being displayed on the table for the next step. Click on the page numbers on the pagination bar. Confirm that the appropriate page of the user list is being loaded having to reload the page. (e.g. if you click page 2, you should see users with the emails " tool_generator_000021@example.com " to " tool_generator_000040@example.com ", and so on) Confirm that the selected page number is highlighted on the pagination bar after it has refreshed. Note: Next and Previous buttons of the pagination bar do not work at the moment and will be fixed on a separate issue.