Changed the type of Error occurring when no valid sender could be found to a FatalJobError in student_proposal_mailer. This means that the job will be immediately aborted. This patch is due to comments on r3000 by SRabbelier. Patch by: Lennard de Rijk Reviewed by: to-be-reviewed

from django.dispatch import Signal

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