Moved the custom error.html page for Site to it's proper place
Also made the error template a proper parameter instead of re-using
the edit/public template.
"""
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"