Various improvements to the generic View code Among others: * Added the 'page' argument to the simple.errorResponse call * Pass the result of getEmptyKeyFields to edit() in create() * Fix typo's in error responses * Fixed a todo to properly redirect on create * Made editPost return something when the form is not valid * Added an _editGet hook Patch by: Sverre Rabbelier 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"