Added SurveyRecordModel. Lennard: On top of the orginial patch I've added several comments to the fields and two TODO's for further subclassing. Patch by: James Levy, Daniel Diniz, Lennard de Rijk Reviewed by: Lennard de Rijk

from django.dispatch import Signal

request_started = Signal()
request_finished = Signal()
got_request_exception = Signal(providing_args=["request"])