Add ability to export more than the number of displayed rows

[tonyfischetti]

The export functionality runs client side to reduce load on the server but, as a consequence, you can only export the number of rows currently displayed. This is too restrictive

Here are some links to documentation that might be helpful:

• https://datatables.net/extensions/buttons/examples/initialisation/plugins
• https://datatables.net/extensions/buttons/custom
• https://datatables.net/reference/option/buttons.buttons.action
• https://cdn.datatables.net/buttons/3.2.0/js/dataTables.buttons.js

Report progress to ZC

[tonyfischetti]

Maybe I can store the previous AJAX call somewhere and repeat it after removing the limit parameters?