Add backscope docs to frontscope docsite

[liammulh]

As of this writing, there's a text file in this repo for setting up the database. It's outdated. We need an up-to-date version in the documentation system/site we eventually end up using.

[liammulh]

As @gwhitney noted in another issue, setting up the database is highly OS-dependent, and it's even dependent on your Linux distro. So I think having detailed instructions for setting up the database is unrealistic. The instructions in the current README have worked fine for me.

That being said, I'd still like to have the backscope docs on the website. Perhaps we could use this issue for that? I'm going to rename the issue.

[liammulh]

As for how we will get the backscope docs onto the frontscope docsite...

Do we configure frontscope's mkdocs.yml to expect a parallel checkout of backscope? What happens if there isn't a parallel checkout of backscope?

[liammulh]

Perhaps we could do something fancy with symlinks?

[liammulh]

I'm not working on this right now. Unassigning myself.