Uncredited Mediator.js file

The file https://github.com/django-cms/django-filer/blob/master/filer/static/filer/js/libs/mediator.min.js seems to be a copy of https://github.com/ajacksified/Mediator.js/blob/v0.9.8/mediator.min.js, but does not include proper attribution as required by the MIT license used there. This violates the licensing terms of Mediator.js.