Finish basic feed

This adds like/dislike (upvote/downvote), comments on the main page, author links, and fake data to see how it will look.

Before: 
![screen shot 2014-03-07 at 4 22 01 pm](https://f.cloud.github.com/assets/537700/2363853/c691903e-a657-11e3-8ce7-cc0d79e2dd8d.png)

After: 
![screen shot 2014-03-07 at 4 25 19 pm](https://f.cloud.github.com/assets/537700/2363869/245415d4-a658-11e3-9ce0-c9db8dc35b98.png)