Bug 19479: Display price in basket group formatted according to CurrencyFormat syspre...

Bug 19479: Display price in basket group formatted according to CurrencyFormat syspref using templates.

On the page acqui/basketgroup.pl the prices of baskets should be shown
formatted according to the selected CurrencyFormat syspref, with no
currency symbol or code.

Test plan:

1) Create a basket with items in it worth more than 1000 currency units.
2) Close the basket.
3) Go to acqui/basketgroup.pl page and check that the price format matches
   the current CurrencyFormat syspref.
4) Go to Administration and change CurrencyFormat syspref to one of the
   other available options and recheck step 3.

Signed-off-by: Séverine QUEUNE <severine.queune@bulac.fr>

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Fixed some tabs.

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>