Reduce bundle size.

src/Squidex/app-config/webpack.run.prod.js

@@ -97,12 +97,10 @@ module.exports = webpackMerge(runConfig, {
         new webpack.optimize.UglifyJsPlugin({
             beautify: false,
             mangle: {
-                screw_ie8: true,
+                screw_ie8: true
-                keep_fnames: true
             },
             compress: {
-                warnings: false,
+                screw_ie8: true, warnings: false
-                screw_ie8: true
             },
             comments: false
         }),