Do not limit button horizontal size (i18n)

Before: 

![capture du 2013-08-29 15 58 59](https://f.cloud.github.com/assets/546692/1050042/68eda0ba-10b3-11e3-9680-68f5545b74ac.png)


After:

![capture du 2013-08-29 15 59 29](https://f.cloud.github.com/assets/546692/1050043/6b4baaaa-10b3-11e3-8bbb-83a8bf53f40e.png)

![capture du 2013-08-29 16 17 20](https://f.cloud.github.com/assets/546692/1050191/bf10607a-10b5-11e3-83bb-166bce4b2816.png)