This was formerly inserted by some deployment scripts. Putting it in
the code here simplifies deployment at little cost to other users.
Change-Id: Ic092bb560c4c90e0e5bc6f9f33426b35214d613d
Reviewed-on: https://go-review.googlesource.com/14741
Reviewed-by: Andrew Gerrand <adg@golang.org>
This change allows the directory front page to be more easily configurable.
Templates are now read only at start-up and stored in a map rather than re-parsed for each page rendering.
LGTM=adg
R=adg
CC=golang-codereviews
https://golang.org/cl/109080044