Set new Melange version number to 0-4-20090302 in app.yaml.template.
Patch by: Pawel Solyga
"Decorator for views that gzips pages if the client supports it."
from django.utils.decorators import decorator_from_middleware
from django.middleware.gzip import GZipMiddleware
gzip_page = decorator_from_middleware(GZipMiddleware)