Added org taking access to Surveys. This taking access means that everyone with an active role for any organization for a given program can take the Survey. This will allow one Survey to be taken by both Org Admins and Mentors.

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

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