Add a couple of prefix redirects
Add a couple of prefix redirects

It's far easier to add these here as prefix-matching redirects than it
will be to enumerate all possible paths under them.

okfn/website,okfn/website,MjAbuz/foundation,MjAbuz/foundation,MjAbuz/foundation,okfn/website,okfn/foundation,okfn/website,okfn/foundation,okfn/foundation,okfn/foundation,MjAbuz/foundation