Started incremental migration to modern Sass from LibSass

Wrangled webpack
Worked with Sass
Improved development pipeline
We have a good bit of legacy Sass styles at Procurated, so I helmed the start of a migration to a modern Sass entrypoint. This includes a new way to manage our color styles, a new way to organize our entrypoints, writing guidelines for CSS styling, and setting up Webpack for the new Sass entrypoint.