update production compress scheme and remove logs

build/webpack.prod.conf.js

@@ -35,7 +35,9 @@ const webpackConfig = merge(baseWebpackConfig, {
     new UglifyJsPlugin({
       uglifyOptions: {
         compress: {
-          warnings: false
+          warnings: false,
+          drop_debugger: true, // self added for removing logs in productions
+          drop_console: true // self added for removing logs in productions
         }
       },
       sourceMap: config.build.productionSourceMap,