Show all bounty claim winners

https://www.bountysource.com/issues/1451139-make-use-of-gtk-3-10-130 Will be awarded to both developers. This will show both of them in the bounty claim awarded box as such:

![image](https://cloud.githubusercontent.com/assets/692632/2965435/3f145640-daf6-11e3-81f6-5240162845fa.png)