Fix #236.

Hi Bas,

Fix for #236.

Giving:

![2014-05-25 15_17_28-moodle 27](https://cloud.githubusercontent.com/assets/1058419/3077164/a8d2e4f0-e417-11e3-88cc-199f359bfc63.png)

Should be cross browser fine as: http://caniuse.com/#search=overflow-wrap

Cheers,

Gareth