Various webpack updates

[marcofugaro]

Changelog:

• You can now also pass a custom config object to buildConfiguration() in webpack.config.js
• Fixed various issues with webpack and loaders, expecially svgs
• NpmInstallPlugin 🎉
• Update multiple dependencies
• Deprecated passing babelrc as a second argument in buildConfiguration() because it was unused and awkward, if we'll need to customize babel in the future we'll do a babel-preset-accurapp so you can have a .babelrc file in your project

[caesarsol]

👍 like this!