Changed the Student Model cleaner to deal with the new Student properties.
Patch by: Madhusudan.C.S and Lennard de Rijk
Reviewed by: to-be-reviewed
"""
Code used in a couple of places to work with the current thread's environment.
Current users include i18n and request prefix handling.
"""
try:
import threading
currentThread = threading.currentThread
except ImportError:
def currentThread():
return "no threading"