[docs] docs now links back to daisy

[Ross Gardler]

The Forrest generated docs are now linking back to the daisy page for 
that document. It doesn't link straight back to the edit page yet, this 
is because the error page when a user is not logged in was quite unhelpful.

I've just had a reply on the Daisy list about how to change this, but I 
don't have access to the zone. Can someone please give me access and I 
will improve things further.

Ross