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

[nosetests]
exclude=pymox
with-coverage=1
cover-package=soc
cover-erase=1
cover-html=1
cover-html-dir=coverageResults
#debug=nose.plugins.cover