[Atlantic Media] redirect assets, cdn, ssl to https://cdn

The reported cert/404 problems with cdn seem to be gone.
assets was not previously covered - https://assets is self-signed, but seems to be the same content.
Redirecting to ssl seems to break some images, such as this:
   https://ssl.theatlantic.com/newsroom/img/posts/2013/12/PenGoogle/4b1d41ac0.jpg <-- 404
   https://cdn.theatlantic.com/newsroom/img/posts/2013/12/PenGoogle/4b1d41ac0.jpg <-- works