The documentation at https://developer.box.com/docs/box-content-preview says
> You can self-host the Preview UI Element or reference the versions hosted on the Box CDN.
but when I tried to use a copy I had saved locally, it failed on `findScriptLocation`. Apparently it depends on its name being hard-coded? And in the comment where it calls findScriptLocation, it refers to using that as a base for "all preview assets."
Does that mean there are other assets I'd have to host as well, in addition to the two preview.js and css files?
Using our hosts would avoid adding exceptions to our security policy.