EDITING: Publishing Background Color

adds an ugly background color for content that has a state of "Publishing".

Should this be a badge next to the title instead? Then, maybe it could be clickable to see the publishing status ; )

depends on #469

Screenshot (note the opacity):
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![image](https://cloud.githubusercontent.com/assets/253202/2802970/4bfa50b4-cc94-11e3-9668-ce8d1f653606.png)