Transition front-end to use TypeScript and Sass

[Chris Mc]

Currently the frontend implementation is entirely in JavaScript. Adopting more newer technologies has it's advantages

• TypeScript: https://medium.com/@jtomaszewski/why-typescript-is-the-best-way-to-write-front-end-in-2019-feb855f9b164
• Sass: https://medium.com/@anshurajlive/the-ultimate-power-of-sass-scss-e1036c273fde

#92 and #93 demonstrate the pain of "type checking" in React.

[Chris Mc]

• https://adriancelczynski.medium.com/react-with-typescript-starter-kit-without-create-react-app-including-webpack-eslint-bef225c35ffa