UI - add babel polyfill (#5714)

* include babel polyfill in the build

* submit not sumbit

ui/app/templates/partials/tools/hash.hbs

@@ -88,7 +88,7 @@
   <div class="field is-grouped box is-fullwidth is-bottomless">
     <div class="control">
       <button
-         type="sumbit"
+         type="submit"
          class="button is-primary"
          data-test-tools-submit="true"
          >

ui/ember-cli-build.js

@@ -32,6 +32,9 @@ module.exports = function(defaults) {
     babel: {
       plugins: ['transform-object-rest-spread'],
     },
+    'ember-cli-babel': {
+      includePolyfill: true,
+    },
     autoprefixer: {
       grid: true,
       browsers: ['defaults', 'ie 11'],