Buttons overlap tabs

If CKAN is in German, you get the following on group pages:

![screen shot 2013-05-10 at 11 43 02](https://f.cloud.github.com/assets/589034/487357/45679aec-b956-11e2-8d4f-7d1fbc58a8c2.png)

There is a tab below the button which is not visible because strings tend to be longer in German than they are in English.