Added _getSurveyTakeForm to the Survey view.
Subclasses can overwrite this method to create their own form. ProjectGradingSurvey will likely be an example for this.
# 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: /