Adds list of (dis)likes a user received

Originally planned by me as a plugin, may-be you want to integrate it directly. Show the list of likes/dislikes a certain user received when clicking on the relevant label in the user profile.

![user-like-dislike-list](https://f.cloud.github.com/assets/917663/434438/793ac452-af3d-11e2-9ef8-5f65f366e77c.png)