Since we don't have icons or access to the JS that transforms
hashtag icon placeholders into their proper icons and colours
on embed and publish pages, we need to at least show _something_
and make sure the hashtags are not totally broken on these pages.
If the feature is enabled, staff members can construct a URL and publish a
topic for others to browse without the regular Discourse chrome.
This is useful if you want to use Discourse like a CMS and publish
topics as articles, which can then be embedded into other systems.
