Added import of force_unicode to utils/text.py

For backwards compatibility with stupid people like me. Refs #18772.

django/utils/text.py

@@ -7,7 +7,9 @@ from gzip import GzipFile
 from django.utils.six.moves import html_entities
 from io import BytesIO
 
-from django.utils.encoding import force_text
+# 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.functional import allow_lazy, SimpleLazyObject
 from django.utils import six
 from django.utils.translation import ugettext_lazy, ugettext as _, pgettext