'Returns the REGION object for the passed request. If the GET param
`region` is `\'None\'`, return `None`. Otherwise, return `request.REGION`
which will have been set by the RegionMiddleware. If somehow we didn\'t
go through the middleware and request.REGION is absent, we fall back to
RESTOFWORLD.'

def get_region_from_request(self, request):

    return get_region_from_request(request)
