Bug 27975: Replace obsolete title-string sorting: Administration templates

Bug 27975: Replace obsolete title-string sorting: Administration templates

This patch modifies two administration 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:

- Administration -> Currencies and exchange rates
- Administration -> Budgets
  - Both the "Active budgets" and "Inactive budgets" tabs

Signed-off-by: Amit Gupta <amit.gupta@informaticsglobal.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>