Rewrite getForFields to use GQL instead of the Query API
Apparently the Query API does not support the IN statement.
Patch by: Sverre Rabbelier
from django.utils.translation import ugettext_lazy as _
PROVINCE_CHOICES = (
('DR', _('Drenthe')),
('FL', _('Flevoland')),
('FR', _('Friesland')),
('GL', _('Gelderland')),
('GR', _('Groningen')),
('LB', _('Limburg')),
('NB', _('Noord-Brabant')),
('NH', _('Noord-Holland')),
('OV', _('Overijssel')),
('UT', _('Utrecht')),
('ZE', _('Zeeland')),
('ZH', _('Zuid-Holland')),
)