Move credits to header

@badlard What do you think?

> Help | Account > *Details | Logout*

to

> Help | Account (100,000 credits) > *Details | Logout*

It [looks like this](https://www.dropbox.com/s/khxqjxxh8vrwjss/Screenshot%202014-12-08%2014.36.03.png?dl=0)