Bug 1060101 - [Settings][Facebook] Removing a Facebook account from Cont...

...acts will not finish if Facebook was set up during the FTU / FTE
better to do this:

```js
'use strict';

/* globals Promise */
/* exported ImportStatusData */

/*
 * Module for communication of import status data between FTU and Comms Apps via
 * Datastore.
 *
*/

if (!window.ImportStatusData) {
  var ImportStatusData = (function() {
```