Rather than hard-coding this URL in this JS file, can you use Django's `reverse` function to set a variable under the `CMS.URL` namespace on the template, and reference that variable here? That way, if we change the URL in urls.py, this JS continue to work with the new URL. (If that is way outside the scope of this pull request, let me know and I'm willing to drop this request -- just wanted to see how easy or hard that is.)