Added request creation and processing to role.py. This is used if you want to request to become a certain role for a group. For instance becoming a club member. The process request view will also be used to cancel outstanding invites might this be necessary. Patch by: Lennard de Rijk Reviewed by: to-be-reviewed

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

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