Django, CSV files, and chunking/streaming 500MB csv files thru http response.

http://stackoverflow.com/questions/5146539/streaming-a-csv-file-in-django

http://crashcoursing.blogspot.com/2011/05/exporting-csv-with-special-characters.html

http://stackoverflow.com/questions/155097/microsoft-excel-mangles-diacritics-in-csv-files