make postgres processor return rawDocuments in document iterator
make postgres processor return rawDocuments in document iterator

fabianvf/scrapi,CenterForOpenScience/scrapi,erinspace/scrapi,erinspace/scrapi,felliott/scrapi,fabianvf/scrapi,mehanig/scrapi,mehanig/scrapi,felliott/scrapi,CenterForOpenScience/scrapi