feat(accountInfo): Add URL to Account Page

Does is make sense to drive this from the directive, something like:

```
<h3>Working Account Info</h3>
<div class="demo-working-account">
    <rx-account-info account-number="12345" target="_blank"></rx-account-info>
</div>
```

Catch it here and pass it into the link tag if it's present. However, this fragments UX, so @glynnis may disagree.