Built jekyll theme for docs

[beets]

Update styles to match datacommons.org

• Built new jekyll theme based on https://github.com/pmarsceill/just-the-docs
• Add code syntax highlighting theme from https://raw.githubusercontent.com/jwarby/pygments-css/master/friendly.css
• Fix sidebar ordering
• Added bootstrap 4.0.0 (has to be included in the _sass folder)

[tjann]

Looks pro now!

[beets]

Thanks! We can enforce https after this is in, since we don't load external sources anymore.

[shifucun]

this is very cool! Is there a way to reference the bootstrap css from somewhere? In current way, might need some license headers in those files? There might be some requirement for included 3rd party code: go/patching#license-headers-and-copyright-notices

[beets]

Yea, good point. Will add that in a follow up. There doesn't seem to be a good way of including it another way while still letting github pages to compile and deploy the pages (other methods require local builds and deploying that instead)

[mvashishtha]

@beets I think this typo breaks some links, e.g. the one to "Statistical Variables" on this page.

[beets]

Thanks for pointing it out. Fixed in #46