Fix broken storybook (#3030)

storybook/stories/loading_indicator.story.js

@@ -0,0 +1,12 @@
+import React from 'react';
+import { IntlProvider } from 'react-intl';
+import { storiesOf } from '@kadira/storybook';
+import getMessagesForLocale from 'mastodon/locales';
+import LoadingIndicator from 'mastodon/components/loading_indicator';
+
+storiesOf('LoadingIndicator', module)
+  .add('default state', () => (
+    <IntlProvider locale='en' messages={getMessagesForLocale('en')}>
+      <LoadingIndicator />
+    </IntlProvider>
+  ));