Vue Project Setup (#8018)

* add files for new client side and reorg gulp tasks

* add deps and script for new client

* fix webpack paths so that building works

* fix static assets not copied into prod build

* fix linting

* add eslint deps and re-enable it in webpack

* add most missing deps for client side and split .babelrc for client

* reorganize .eslintignore

* update client tests paths and .gitignore

* uncomment code

* client: move App component

* client: update oaths in App component

* fix client tests and add more deps

* add client side tests to npm test

* fix typo in depencency name

* update more deps

* fix karma.conf.js and upgrade phantomjs

* fix dep and move karma.conf to subdirectory

* update karma.conf.js position in Gruntfile

* try downgrading phantomjs

* Fixup client tests (#8032)

* Use phantom 2

* fix(tests): Fix refresher test

* gitignore translation mock

* Update karma version

* disable e2e tests for new client from build

* write vue templates with pug

* add basic routing

* remove unnecessary Function.bind shim

* remove unused dependency

website/client/router.js

@@ -0,0 +1,15 @@
+import Vue from 'vue';
+import VueRouter from 'vue-router';
+import Hello from './components/Hello';
+import Sub from './components/Sub';
+
+Vue.use(VueRouter);
+
+export default new VueRouter({
+  mode: 'history',
+  base: __dirname,
+  routes: [
+    { path: '/', component: Hello },
+    { path: '/sub', component: Sub },
+  ],
+});