Remove unused imports in soc.views.models role, host and site modules. Add missing parameter in getDjangoURLPatters method.
Patch by: Pawel Solyga
# 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: /