Added several methods to the Task Logic module. These include the automatic tranistion methods. The methods for running updates , that for instance place comments, in a datastore transition to keep the Task synced with the comments. And a rudimentary way of updating the Tasks' history. Reviewed by: Lennard de Rijk

"""
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"