Add static rendering

[gunzip]

As seen on https://github.com/vgno/roc-web-react/issues/22

We should add the possibility to render sites to static markup. This can be used with Github Pages and running applications in general without the need for a node backend.

which couples with "make react-router configurable", expecially the history params: browserHistory (which depends from server) vs hashHistory (which is client only).

[dlmr]

This issue has been moved into the mono repository rocjs/extensions#19.