#437 - improves UX when adding Wordpress.com blogs via an existing accou...

Issue: https://github.com/wordpress-mobile/WordPress-iOS/issues/437

![ios simulator screen shot nov 13 2013 2 50 07 pm](https://f.cloud.github.com/assets/3904502/1536728/24110b0e-4cb7-11e3-911d-3de85bd54c07.png)