First attempt at  [#84211342] -- Increase maximum file size in ngnx proxy config.

See also:

http://docs.aws.amazon.com/elasticbeanstalk/latest/dg/customize-containers-ec2.html
http://docs.aws.amazon.com/elasticbeanstalk/latest/dg/customize-containers.html#customize-containers-format
http://nginx.org/en/docs/http/ngx_http_core_module.html#client_max_body_size
http://wiki.nginx.org/FullExample

https://www.pivotaltracker.com/story/show/84211342