Bug 28018: Replace obsolete title-string sorting: OPAC templates

Bug 28018: Replace obsolete title-string sorting: OPAC templates

This patch modifies OPAC templates to replace the use of the
"title-string" DataTables sorting method with the newer "data-order"
attribute.

To test, apply the patch and view the following pages to confirm that
columns containing dates sort correctly when using any setting of the
"dateformat" system preference:

- As a logged-in user, (proper testing will depend on having the
  relevant data associated with your user, e.g. holds, searches, ill
  requests, etc.):
  - Your summary
    - Checkouts
    - Overdues
    - Holds
  - Your charges
  - Your search history
  - Your checkout history
  - Your holds history
  - Your interlibrary loan requests
  - Your tags
- Bibliographic detail page
  - With a non-serial record: Holdings
  - With a serial record: Latest issues
    - More details -> Full history: Test multiple years if possible
- Course reserves -> Course details
- Self checkout -> Check out to a patron with checkouts

Signed-off-by: Amit Gupta <amitddng135@gmail.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>