Fixes sprint planning title

Prevents issue titles wrapping onto new lines and breaking layout if they are too long.

Fixes:
![Screen Shot 2013-03-12 at 01 16 17](https://f.cloud.github.com/assets/145826/246849/7efc879a-8ab2-11e2-8e59-e536f856d835.png)

For this:
![Screen Shot 2013-03-12 at 01 14 53](https://f.cloud.github.com/assets/145826/246847/6d3779fc-8ab2-11e2-8a95-d6fa51821bf3.png)

Tested in Chrome, Firefox, Safari on Mac OSX.