django2.0适配版本的editable.py第59行，缺少Media的引用

Author: flyskyer

xadmin/plugins/editable.py

@@ -2,6 +2,7 @@
 from django.core.exceptions import PermissionDenied, ObjectDoesNotExist
 from django.db import models, transaction
 from django.forms.models import modelform_factory
+from django.forms import Media
 from django.http import Http404, HttpResponse
 from django.utils.encoding import force_text, smart_text
 from django.utils.html import escape, conditional_escape
@@ -161,5 +162,6 @@ def post(self, request, object_id):
 
         return self.render_response(result)
 
+
 site.register_plugin(EditablePlugin, ListAdminView)
 site.register_modelview(r'^(.+)/patch/$', EditPatchView, name='%s_%s_patch')