Many changes to data, docs, and testing.

Still failing, but thought I would checkpoint things here.
RF + TST: what's the point of having tests, if you don't run them?
NF: fetch data from SDR.
BF: Allow reading of data when the folder is already in place.
More data, more notebooks.
This is much nicer
Streamlining this page.
Experimenting with templating. So far, not working so great.
More specific here.
DOC: Makefile upload rule. It's crude, but it works.
DOC: Lot's more good stuff.
DOC: some fixes.
DOCS More tweaking the feel of the html docs.
More tweaking of the html.
DOC: Final tweaking, for now.
Gotta push it to get it to update the webpage.
RF: Remove the gui app for now.
RF: Command line interface.
DOC: Documenting the CLI.
DOC: use a nicer color for the background of code examples.