Added SurveyRecordModel. Lennard: On top of the orginial patch I've added several comments to the fields and two TODO's for further subclassing. Patch by: James Levy, Daniel Diniz, Lennard de Rijk Reviewed by: Lennard de Rijk

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