When constructing the sidebar don't overide 'sidebar'
Instead specify 'sidebar_additional' and include it even if there
is a 'sidebar' defined.
Patch by: Sverre Rabbelier
"""
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"