Bug 35007: Configure self checkout tables consistently

Bug 35007: Configure self checkout tables consistently

This patch makes some updates to the self checkout page so that
checkouts, holds, and account tabs are consistent with each other, with
the same DataTables configuration.

Included in the DataTables configuration are the same options we use on
the OPAC's user summary page to show controls for copy, CSV, and print.

Also changed: Some extra markup is removed from holds-table.inc, markup
which was used to show table information responsively before we started
using the DataTables responsive plugin.

To test, apply the patch and log into the self checkout system as a user
with checkouts, holds, and present or past charges.

Compare the checkouts, holds, and charges tabs to confirm that the
tables look correct and work correctly. Test that the copy, CSV, and
print controls, and the search and clear filter functions. Test that
each table responds correctly at various browser widths.

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>