Add toolbox loader for production build

Author: javivelasco

docs/webpack.config.production.js

@@ -32,7 +32,7 @@ module.exports = {
         loader: 'babel'
       }, {
         test: /(\.scss|\.css)$/,
-        loader: ExtractTextPlugin.extract('style', 'css?modules&importLoaders=1&localIdentName=[name]__[local]___[hash:base64:5]!postcss!sass')
+        loader: ExtractTextPlugin.extract('style', 'css?modules&importLoaders=1&localIdentName=[name]__[local]___[hash:base64:5]!postcss!sass!toolbox')
       }, {
         test: /(\.txt)$/,
         loader: 'raw',