Bug 12209 - Fix currency symbol for NOK

Bug 12209 - Fix currency symbol for NOK

Dunno why, but the currency symbol for NOK was given as "$", when
it should be "kr".

To test:
- Empty the "currency" table in the DB:
    DELETE FROM currency;
- Load in the file changed by this patch:
    sudo koha-mysql <instance> < installer/data/mysql/nb-NO/2-Valgfritt/parameters.sql
    (if you are testing on a (gitified) package install)
- Check that "kr" is displayed on /cgi-bin/koha/admin/currency.pl
- Add a budget and a fund, and check that "kr" is displayed in the list
  of funds (currency symbols seem to be missing from the list of budgets)

Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
file loads ok, kr currency active, no errors

Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Works as described, no problems found.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>