ungroup button on dashboard

My attempt at un-groupping button on dashboard. Though it does not work, and despite more than hals an hour of css-foo I am unable to understand why. 

Indeed there is no margin between button but there should be. I tried many things: wrapping on `btn-group`s, and so on and so forth. 

@jdfreder, I would appreciate your help seing the the code is the same as button on top of the page and don't work. I would prefer to avoid targetting these particular buttons with custom css. 


Space in between button.
![capture d ecran 2014-12-18 a 22 14 54](https://cloud.githubusercontent.com/assets/335567/5496026/6ec7ec1c-8703-11e4-8991-e42d649b1bd0.png)

Same code, but no space. 

![capture d ecran 2014-12-18 a 22 14 49](https://cloud.githubusercontent.com/assets/335567/5496027/6ee69644-8703-11e4-85e2-719d6c7358ca.png)