Website: Refactored website building tasks to async.js.
Website: Extract the update-type filter sidebar to a separate jade file.
Website: Add a page with download statistics.
Website: Fixed undefined variable "google" on all pages except stats.
Website: Make the link target of the "additional links" configurable.

Adddionally highlight an active link (if it's given as relative link in
the config).
Remove leftover debug output.
Website: Fixed jade warning "missing space before text".