Another stab at #48: Proper watch and star buttons

![screen shot 2014-05-17 at 7 44 07 pm](https://cloud.githubusercontent.com/assets/98681/3006549/a41d04fe-de36-11e3-9a7f-e3fa1c0a67b7.png)

This takes #48 and fixes a few things:

* Watching is now pointing to subscribers from the API, not the stargazers/watchers values
* Stars properly uses stargazers counts
* Removes a stargazers count function
* Cleans up the display of the page

Should be good to go, I think. I'll mark this as v2 once merged. My only concern is folks who have used `watch` to previously mean Star. They'll have to change all their embeds, and that's not so good.

Thoughts?