Speed up build (#1852)

* single build webpack

* fix demo shell test

ng2-components/ng2-activiti-processlist/webpack.build.js

@@ -0,0 +1,17 @@
+const webpack = require("webpack");
+const webpackMerge = require('webpack-merge');
+const commonConfig = require('../config/webpack.common.js');
+
+module.exports = webpackMerge(commonConfig, {
+
+    output: {
+        filename: './bundles/[name].js',
+        library: '[name]',
+        libraryTarget: 'umd',
+        chunkFilename: '[id].chunk.js'
+    },
+
+    entry: {
+        "ng2-activiti-processlist": "./index.ts"
+    }
+});