Fix changes introduced in fd04e7 so they don't break on Python 3.

from __future__ import unicode_literals

import re

from django.utils import six

import unicodedata

import warnings

from gzip import GzipFile

from django.utils.six.moves import html_entities

from io import BytesIO

from django.utils.encoding import force_text

if not six.PY3:

    # Import force_unicode even though this module doesn't use it, because some

    # people rely on it being here.

from django.utils.encoding import force_text, force_unicode

    from django.utils.encoding import force_unicode

from django.utils.functional import allow_lazy, SimpleLazyObject

from django.utils import six

from django.utils.translation import ugettext_lazy, ugettext as _, pgettext