Bug 25775: Add DataTables controls to user's checkouts table in OPAC

Bug 25775: Add DataTables controls to user's checkouts table in OPAC

This patch updates the "your summary" page in the OPAC so that tables on
the logged-in user's page have DataTables controls. The patch also
tweaks the DataTable configuration of some other pages to make them all
more consistent.

To test, apply the patch and rebuild the OPAC CSS
(https://wiki.koha-community.org/wiki/Working_with_SCSS_in_the_OPAC_and_staff_client).

- Log in to the OPAC as a user who has checkouts, overdues, and holds.
- On the "your summary" page, confirm that the checkouts table has
  controls at the top: A search form and link-style buttons: Clear
  filter, Copy, CSV, Print, iCal, Renew selected, and Renew all.
- Confirm that each work correctly.
- At the bottom of the page, the style of the "Renew selected" and
  "Renew all" buttons should now be side by side.
- Confirm that both buttons work correctly.
- If necessary, enable the UseCourseReserves system preference.
- Go to the OPAC course reserves page.
- Confirm that there is a working "Search courses" field at the top of
  the table.
- View the contents of a course reserve.
- There should be a "Search course reserves" field at the top of the
  table.

Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>