Reverted [10346] because it effectively breaks USE_I18N by forcing import of...

from django.core import signals

from django.utils.encoding import force_unicode

from django.utils.importlib import import_module

from django.utils.translation import ugettext_lazy as _

class BaseHandler(object):

    # Changes that are always applied to a response (in this order).

                    finally:

                        receivers = signals.got_request_exception.send(sender=self.__class__, request=request)

        except exceptions.PermissionDenied:

            return http.HttpResponseForbidden('<h1>%s</h1>' % _("Permission denied"))

            return http.HttpResponseForbidden('<h1>Permission denied</h1>')

        except SystemExit:

            # Allow sys.exit() to actually exit. See tickets #1023 and #4701

            raise