Return the ToS Document of the supplied Presence entity, if there is one.
Patch by: Todd Larsen
Review by: to-be-reviewed
# 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: /