HackerNews: added domain, better metabar

As per @jkanarek and @moollaza's comments on #976.
![screenshot - 07222014 - 05 04 53 pm](https://cloud.githubusercontent.com/assets/4411471/3665219/dffe12ca-11e3-11e4-8419-9524430cd315.png)
We may need to play with the colors.