Add timestamps to containers in content-footer

Before:
![screen shot 2014-10-30 at 17 16 08](https://cloud.githubusercontent.com/assets/1607666/4848193/982334bc-6058-11e4-9aaf-99c995d7eaf6.png)

After:
![screen shot 2014-10-30 at 17 16 19](https://cloud.githubusercontent.com/assets/1607666/4848194/98267d70-6058-11e4-8341-833db370a62b.png)