node move permission fix

- 'app_label' added to match the permission codenames - instance parameter 'moved' removed from the permission check because default Django implementation of object level permisson backend returns 'False' even (non-admin) user has change permission for that object type

Author: akermen

polymorphic_tree/admin/parentadmin.py

@@ -154,7 +154,7 @@ def api_node_moved_view(self, request):
  except self.model.DoesNotExist as e:
  return HttpResponseNotFound(json.dumps({'action': 'reload', 'error': str(e[0])}), content_type='application/json')
 
- if not request.user.has_perm(get_permission_codename('change', moved._meta), moved):
+ if not request.user.has_perm("%s.%s" % (moved._meta.app_label, get_permission_codename('change', moved._meta))):
  return HttpResponse(json.dumps({
  'action': 'reject',
  'moved_id': moved_id,