Bug 27994: Replace obsolete title-string sorting: Reports templates

Bug 27994: Replace obsolete title-string sorting: Reports templates

This patch modifies several reports 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:

- Guided reports -> Saved SQL reports
- Guided reports -> Saved SQL reports -> New SQL from Mana -> Search
  results.
- Reports -> Items lost
- Reports -> Serials

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>