this nginx works with https://github.com/cesine/CorpusWebService/commit/9f344dea59935722df6a40d85e946765345f801b and https://github.com/cesine/AuthenticationWebService/commit/bdb7098309a72f08b90becd8f4917567c41b6f42 to make CORS proxy work on new dev testing servers for https://github.com/OpenSourceFieldlinguistics/FieldDB/issues/838