[Suggestion] Disabling displaying JS Uglify Warnings 

There are quite some warnings while uglifying `main.js` file - most if not all from 3rd party libs.

Maybe it's a good idea to disable them by adding `compress` options:
```
new webpack.optimize.UglifyJsPlugin({
	mangle: {
		'keep_fnames': true
	},
	compress: {
		warnings: false
	}
})
```