Show unpublishing information on drafts

www.agileplannerapp.com/boards/173808/cards/8902

content designers need to know when a draft is a fresh draft as opposed to a draft that resulted from an unpublishing. this is a temporary fix whilst we create a state called 'unpublished' to represent such editions.

![screen shot 2014-12-15 at 15 52 36](https://cloud.githubusercontent.com/assets/319055/5438743/77ffa43e-8472-11e4-90cf-b141c064dda2.png)
![screen shot 2014-12-15 at 15 52 48](https://cloud.githubusercontent.com/assets/319055/5438744/78006f36-8472-11e4-887f-1a8af1321465.png)