Prevent build errors with many small css modules

Prevent build errors with many small css modules

Author: ro-savage

config/webpack.config.prod.js

@@ -350,6 +350,7 @@ module.exports = {
     // Note: this won't work without ExtractTextPlugin.extract(..) in `loaders`.
     new ExtractTextPlugin({
       filename: cssFilename,
+      ignoreOrder: true,
     }),
     // Generate a manifest file which contains a mapping of all asset filenames
     // to their corresponding output file so that tools can pick it up without