* Match default setup same as create-react-app.
* Stop pre-building the manager
This allow us to customize the manager dynamically.
* Update manager for the production build.
* Remove building source-maps.
* Fix lint issues.
* Improve static file handling.
* Update dev docs.
* Use dist directory for the manager's source.
* Add support for stage-0.
* Replace raw loader with the css loader in production CSS handling.
* Remove specific babel plugins since we support stage-0.