Improved dash and flow along with more options

As released

Reasonable JavaScript REST lib in place

This tag has the tools in place that I think we want.

I hope.

Because we're going to build with them.

Before deleting old material.

This tag indicates the point where I started removing
exploration material from the repository. From this point
forward, we're exploring the RESTful API version of the
URCPP/Flask app.

This tag is a good place to go to look for old code, basically.