hoodie.account.resetPasswords(email) resolves although email could not be found.

the feature works as expected, the worker does its job. But it returns an error:

```json
{
    "_id": "org.couchdb.user:$passwordReset/joe@example.com/lr8onx3",
    "_rev": "2-e58c496dc293dc39c89bd39a0505141a",
    "type": "user",
    "roles": [],
    "password_scheme": "pbkdf2",
    "iterations": 10,
    "name": "$passwordReset/joe@example.com/lr8onx3",
    "createdAt": "2013-11-08T15:53:39.863Z",
    "updatedAt": "2013-11-08T15:53:39.709Z",
    "derived_key": "72d8c1bcf98c6ece9789e823bfdbb5fee6d31e68",
    "salt": "559642e536109adfafbe5410152c5473",
    "$error": {
        "error": "not_found",
        "message": "user joe@example.com could not be found"
    }
}
```

Nevertheless, hoodie.account.resetPasswords() resolved. Expected behaviour would be to reject with `$error`