Npm install warnings

[KrzysztofMadejski]

There are some npm install warnings that could be resolved:

npm WARN deprecated [email protected]: 🙌  Thanks for using Babel: we recommend using babel-preset-env now: please read babeljs.io/env to update! 
npm WARN deprecated [email protected]: Renamed to https://www.npmjs.com/package/webpack-stream
npm WARN [email protected] license should be a valid SPDX license expression

Also there are some warnings regarding dependencies of "babel-preset-react": "^6.5.0", "babel-preset-react-hmre": "^1.1.0", but I think they are not used, as react hasn't been used. Am I right @voidberg?

Warnings:

npm WARN [email protected] requires a peer of react@^0.14.0 || ^15.0.0 || ^16.0.0-beta || ^16.0.0 but none was installed.
npm WARN [email protected] requires a peer of react-dom@^0.14.0 || ^15.0.0 || ^16.0.0-beta || ^16.0.0 but none was installed.

React is mentioned in following places: https://github.com/TransparenCEE/factchecker-plugin-chrome/search?q=react&type=Code&utf8=%E2%9C%93

[voidberg]

Need to double check, I think those are used for the airbnb eslint rules but there should be a non-react version.