Load babel-polyfill only when necessary.

app/src/admin.js

@@ -1,4 +1,3 @@
-import 'babel-polyfill';
 import Vue from 'vue';
 import Admin from './Admin.vue';
 import Icon from 'vue-awesome/components/Icon.vue'

app/src/download.js

@@ -1,4 +1,3 @@
-import 'babel-polyfill';
 import Vue from 'vue';
 import Download from './Download.vue';
 import Icon from 'vue-awesome/components/Icon.vue'

app/src/upload.js

@@ -1,4 +1,3 @@
-import 'babel-polyfill';
 import Vue from 'vue';
 import Upload from './Upload.vue';
 import store from './Upload/store.js';