Fix #1749 by using word-wrap instead of word-break

Fixes #1749 

Turns out word-break is for CJK characters specifically. 'word-wrap' is the CSS property I wanted.

![image](https://f.cloud.github.com/assets/7574/2035275/b6deda12-8937-11e3-8429-7656d2e17790.png)

![image](https://f.cloud.github.com/assets/7574/2035279/c08687d6-8937-11e3-9c2c-300a529daead.png)

There's not much we can do if there are literally no spaces in the phrase unfortunately. The text will be clipped:
![image](https://f.cloud.github.com/assets/7574/2035304/0a5976b6-8938-11e3-8aa8-21b5acd8fb99.png)