Friendly recs

Adds a expanadable header directive for the main view. 

Screens: 


default:
![default](https://cloud.githubusercontent.com/assets/2153070/3020257/754b638e-df9c-11e3-8641-1386b4bc4f56.PNG)


multiple abstracts:
![multiple1](https://cloud.githubusercontent.com/assets/2153070/3020255/754b1442-df9c-11e3-8dc5-3b064f6d5227.PNG)


expanded abstracts:
![multiple2](https://cloud.githubusercontent.com/assets/2153070/3020256/754b4aa2-df9c-11e3-9d3f-a6e7d0a8e5a7.PNG)


one abstract selected:
![one abstract](https://cloud.githubusercontent.com/assets/2153070/3020254/754ac15e-df9c-11e3-9cc7-a117a888cae0.PNG)


Also adds an animation for entering and leaving on the abstracts. As well as a loading screen that scrolls up when getting recs.