Ensure Angular is running as production (#1093)

webpack.config.js

@@ -135,6 +135,7 @@ const plugins = [
     new webpack.DefinePlugin({
         'process.env': {
             'ENV': JSON.stringify(ENV),
+            'NODE_ENV': NODE_ENV === 'production' ? 'production' : 'development',
             'SELF_HOST': JSON.stringify(process.env.SELF_HOST === 'true' ? true : false),
             'APPLICATION_VERSION': JSON.stringify(pjson.version),
             'CACHE_TAG': JSON.stringify(Math.random().toString(36).substring(7)),