Both prod / prod 6.14 use same .babelrc

[jonyrock-back]

When we build for production, we use .babelrc to make dist/server-dev.js which should be ready to use on node 8: https://github.com/hastic/hastic-server/blob/master/.travis.yml#L8

that it not great to use same config for two different types of build: for node 8 and for node 6.