Reorganize and refactor build routine

assets/build/webpack.config.watch.js

@@ -1,12 +1,12 @@
 const webpack = require('webpack');
 const BrowserSyncPlugin = require('./webpack.plugin.browsersync');
-const mergeWithConcat = require('./util/mergeWithConcat');
 
 const config = require('./config');
 
 module.exports = {
   output: { pathinfo: true },
   devtool: '#cheap-module-source-map',
+  stats: false,
   plugins: [
     new webpack.optimize.OccurrenceOrderPlugin(),
     new webpack.HotModuleReplacementPlugin(),
@@ -15,9 +15,7 @@ module.exports = {
       target: config.devUrl,
       publicPath: config.publicPath,
       proxyUrl: config.proxyUrl,
-      browserSyncOptions: mergeWithConcat({
-        files: config.watch,
-      }, config.browserSyncOptions),
+      watch: config.watch,
     }),
   ],
 };