Fix not working delete Sponsor functionality after recent commit. Add delete() method to Base class. Make soc.views.site.sponsor.delete() request handler use this method. Patch by: Pawel Solyga Review by: to-be-reviewed

from query import *
from subqueries import *
from where import AND, OR
from datastructures import EmptyResultSet

__all__ = ['Query', 'AND', 'OR', 'EmptyResultSet']