Dev dashboard style enhancements (issue#99)

See #99

* Changed style of the developer dashboard to match that of the reviewer dashboard/design mockups.
* Used queue positions
* Show waiting time/queue position only on pending games

This is how it looks:
![image](https://cloud.githubusercontent.com/assets/1669035/2728319/ffea132c-c5ee-11e3-828d-8e8a08e3eee5.png)

I'm not too sure if this dashboard needs the font-awesome buttons because there are less buttons on the developer dashboard, but I put them anyways. I can always remove it.

Things to do:
* Hide disabled/deleted games?
* Hide disable/delete buttons if disabled/deleted
* Proper row behavior on disable/delete

r? @cvan