Some functions which applies to scoped tags in general moved from TaskTag to Task model.
Also, some stylish and whitespace changes and docstrings added.
# 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: /