A Xara NavBar need not show every design page. You control this or any button arrangement you care for.

What I normally would do is add a Footer, stuck to the bottom, and repeated across all pages of these three as Text Links, not buttons to emphasise they are different and distinct but of the site.
Let them remain part of the entire website design as publishing separately achieves little.

If you have a scrolling website, just make them the last pages.
You could make them into a single page, The Legal Stuff, and have the links just move to their respective Bookmark.

They can be plainer and a different size to the 'proper' site.

Acorn