Bug 11265: ensure current locale is selected when editing a subscription

Bug 11265: ensure current locale is selected when editing a subscription

Test plan:
0/ you have to have some locales defined, run dpkg-reconfigure locales
to configure locales
1/ edit a subscription (or add a new one) and select a locale
2/ save
3/ edit again and verify the locale value is selected

Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
Work as described. No koha-qa errors.

Tested creating a suscription, selecting locale (have many) and saving.
When editing suscription:
1) Without patch locale value is not showed on page, empty value
2) With patch correct value is displayed

Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Passes all tests and QA script. Template change only.
Works as expected - saved locale is now shown on editing the
subscription and will not be deleted upon saving.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
(cherry picked from commit ff0b85a0e0d86bc95ed78056f5225a3a1c14c6ea)
Signed-off-by: Fridolin SOMERS <fridolin.somers@biblibre.com>