Use sensible slugs for documents

Stand-along documents should still have good slugs and not ones with directory separators in them.
Don't import error documents. Also don't import an ancient document that I don't think I even ever linked to.

I'll create new error documents for the site, and even if I was going to keep the old ones, they wouldn't be represented as regular entries.
Placeholder redirect script so I won't forget to write it
Add support for static pages are promoted blog entries
Make the editor slightly more user friendly
Have an Apache config that REALLY works

This time tested on static and dynamic content instead of just static content. (le sigh).