Removed getSurveyResponseFromPost from Surveys helper. We will use the power of Django Forms instead of getting our own properties. This fits better into the rest of Melange which also uses this approach.

# Geo-enabled Sitemap classes.
from django.contrib.gis.sitemaps.georss import GeoRSSSitemap
from django.contrib.gis.sitemaps.kml import KMLSitemap, KMZSitemap