Contribute to react-scripts-ts instead of maintaining own fork

[sverhoeven]

The Typescript quickstart uses react-scripts-ts and as such seems to be the go to for starting a React+TS based project.

I converted https://github.com/3D-e-Chem/molviewer-tsx/tree/react-scripts-ts from using this repo (ours) to the react-scripts-ts (theirs). The molviewer uses prettier for formatting. To make linter pass the semi-colon, interface-name, typedef, no-any rules where removed.

This repo is different (ours -> theirs) by:

• awesome-typescript-loader (+ babel) -> ts-loader
• tsconfig different no-'s checks
• own tslint package -> tslint extends tslint-react with lots of overwrites, see Externalise ts-lint rules wmonk/create-react-app-typescript#112
• ts declaration for fetch() needed because target is es5 -> not needed
• typescript specific README -> same as facebook
• lint command -> not included, mimic with tslint --type-check -t verbose --project .
• @types/* + react-scripts in devDeps -> in deps
• coverage must be run without cache and single worker -> coverage errors on src/*.d.ts
• missing registerServiceWorker -> includes registerServiceWorker

Most of the improvements in our repo can be added to theirs.
After which we could moth-ball this repo, freeing us from it's maintenance.