Discussion emails not working

Errors in the log saying:

```
[2013-07-31T15:00:53.445Z] ERROR: oae-email/3773 on release0: No email metadata template existed for user (templateModule=oae-discussion, templateId=notify-discussion-message)
    err: {
      "code": 500,
      "msg": "No email metadata template existed for user"
    }
    --
    toUser: {
      "id": "u:oae:g1Ovqfpw",
      "locale": "en_GB"
    }
```

Upon further inspection, in `oae-discussions/lib/activity.js`:

```
ActivityAPI.registerActivityType(DiscussionsConstants.activity.ACTIVITY_DISCUSSION_UPDATE, {
    'groupBy': [
        // "Discussion Item was updated by 5 users"
        {'object': true}
    ],
    'notifications': {
        'email': true,
        'emailTemplateModule': 'oae-discussion',
        'emailTemplateId': 'notify-discussion-update'
    }
});
```

The `oae-discussion` should be `oae-discussions`  :(