Added failed_evaluations property to StudentProject model. This is used to store GradingRecords which state a fail for this project. It's a list because manual changes in GradingRecords might force multiple GradingRecords to state a fail. Also it needs to be clear which GradingRecords have been processed and with which grade_decision.

#!/usr/bin/env python

if __name__ == "__main__":
    import sys
    name = sys.argv[0]
    args = ' '.join(sys.argv[1:])
    print >> sys.stderr, "%s has been moved into django-admin.py" % name
    print >> sys.stderr, 'Please run "django-admin.py compilemessages %s" instead.'% args
    print >> sys.stderr
    sys.exit(1)