404 and 500 pages don't load assets

[cg2v]

The 404 and 500 pages don't look right in production because the unhashed assets are not available.

The pages should be precompiled as described at http://stackoverflow.com/a/15068268/1564027 and https://www.icelab.com.au/notes/precompiled-rails-static-404-and-500-pages/

I don't know when I will get to this