Display project URL in statusLabel on titleButton hover

Hi Guys,

I thought this would be a nice addition, so I hacked a quick proof of concept together, not sure if Notifications are actually the way to go for this, I'd love to hear other suggestions! Might want to move the label a bit to the left but I wanted to keep the PR as simple as possible.

Cheers!

![screen shot 2013-05-06 at 4 36 28 pm](https://f.cloud.github.com/assets/749864/466410/7a18b644-b65a-11e2-8a08-774db15fbaba.png)