Prepare for callbacks that return more than one menu
This paves the way for callbacks that dynamically construct their
menu based on in-db content, such as Programs and Documents.
Patch by: Sverre Rabbelier
# Directions for web crawlers.
# See http://www.robotstxt.org/wc/norobots.html.
User-agent: HTTrack
User-agent: puf
User-agent: MSIECrawler
User-agent: Nutch
Disallow: /