Webpack (#9391)

* webpack poc, this is not going to work for plugins, dam

* tech: webpack and systemjs for plugins starting to work

* tech: webpack and systemjs combo starting to work

* tech: webpack + karma tests progress

* tech: webpack + karma progress

* tech: working on tests

* tech: webpack

* tech: webpack + karma, all tests pass

* tech: webpack + karma, all tests pass

* tech: webpack all tests pass

* webpack: getting closer

* tech: webpack progress

* webpack: further build refinements

* webpack: ng annotate fixes

* webpack: optimized build fix

* tech: minor fix for elasticsearch

* tech: webpack + ace editor

* tech: restored lodash move mixin compatability

* tech: added enzyme react test and upgraded to react v16

* tech: package version fix

* tech: added testdata to built in bundle

* webpack: sass progress

* tech: prod & dev build is working for the sass

* tech: clean up unused grunt stuff and moved to scripts folder

* tech: added vendor and manifest chunks, updated readme and docs

* tech: webpack finishing touches

scripts/grunt/options/webpack.js

@@ -0,0 +1,13 @@
+const dev = require('../../webpack/webpack.dev.js');
+const prod = require('../../webpack/webpack.prod.js');
+
+module.exports = function() {
+  'use strict';
+  return {
+    options: {
+      stats: !process.env.NODE_ENV || process.env.NODE_ENV === 'development'
+    },
+    dev: dev,
+    prod: prod
+  };
+};