add commentary users publication

This is to allow non-logged in users to be able to see user names and avatars. This also allows logged in users to be able to see user names and avatars of all others that make comments.

-Adds a users publication (all users for now) for commentaries. 

![image](https://cloud.githubusercontent.com/assets/606131/5256507/929db762-797e-11e4-8dda-7624af6c8982.png)