Updates the requirements on [less](https://github.com/less/less.js) to permit the latest version.
- [Release notes](https://github.com/less/less.js/releases)
- [Changelog](https://github.com/less/less.js/blob/master/CHANGELOG.md)
- [Commits](https://github.com/less/less.js/commits/v3.8.0

)

Signed-off-by: dependabot[bot] <support@dependabot.com>

Updates the requirements on [babel-eslint](https://github.com/babel/babel-eslint) to permit the latest version.
- [Release notes](https://github.com/babel/babel-eslint/releases)
- [Commits](https://github.com/babel/babel-eslint/commits/v8.2.6

)

Signed-off-by: dependabot[bot] <support@dependabot.com>

Updates the requirements on [file-loader](https://github.com/webpack/file-loader) to permit the latest version.
- [Release notes](https://github.com/webpack/file-loader/releases)
- [Changelog](https://github.com/webpack-contrib/file-loader/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack/file-loader/commits/v1.1.11

)

Signed-off-by: dependabot[bot] <support@dependabot.com>

Updates the requirements on [webpack-dev-server](https://github.com/webpack/webpack-dev-server) to permit the latest version.
- [Release notes](https://github.com/webpack/webpack-dev-server/releases)
- [Commits](https://github.com/webpack/webpack-dev-server/commits/v3.1.5

)

Signed-off-by: dependabot[bot] <support@dependabot.com>

This reverts commit d39db511.

The npm configuration:
- Includes linting of javascript with eslint

The webpack setup here:
- Bundles javascript and css, using hashing to support server-side
  caching, with support from Flask-Webpack and
  manifest-revision-webpack-plugin
- Uses babel to transpile ES6 javascript
- Includes a development server with hot-replacing of javascript and
  css code