UPDATE: Allowing adding special condition for the "partials" directory so that the "privacy-body.html.md" file can be version controlled in this repository so that content authors will be able to edit it from this repository.
FIX & UPDATE: It took several changes to get the ajax loaded version of the Privacy page to render the way that it's expected by the frontend JS handler. I've done the following:

1) Deleted privacy.html.md as this file needs to a) turn into a file that calls for a partial and b) needs to be an eco file in order to use a partial.
2) Added in privacy.html.eco as the replacement to privacy.html.md. The file now uses the "article" layout and renders the privacy-body.html.md partial.
3) Updated the documents/privacy-content/index.html.eco file so that it now calls for the privacy-body.html.md partial instead of trying to include the original privacy.html.md file. Also corrected the problem that was causing the "double-footer" to appear; this file now uses the correct layout - the "content" layout - and renders with the correct markup.