Navbar truncation

Hey,

Here is a solution to #27 the long titles in the next, prev buttons in the navigation bar. I happened accross it by chance, it by @aababilov.
![screenshot from 2013-07-25 19 46 51](https://f.cloud.github.com/assets/2660/854831/aa9c7ac8-f50f-11e2-9992-76921298c759.png)

Cheers,
Russell