Feature: Add Commentary Submit box, Commentaries to Users, and Commentary List view

-Added jQuery Autosize package for expanding textareas

TODO: 
-Submit button on the right hand side
-more stylish textarea box
-bespoke submission icon

![image](https://cloud.githubusercontent.com/assets/606131/5236965/3ed0d25a-7815-11e4-9983-5fad20589355.png)