Parent Repos Option Repos Widget

I've added a new functionality to the Repos Widget.

Now, the user have a check to set if he wants to show the parent repos of their repos.

![image](https://cloud.githubusercontent.com/assets/4325510/4965046/e61544e8-677a-11e4-9281-15d5fcf418cd.png)

This is how looks like.

![image](https://cloud.githubusercontent.com/assets/4325510/4965047/f41983e2-677a-11e4-81fb-34849af13e93.png)

I've added the Font Awesome too to show the forked icon.

I've controlled the API calls using initial cache functions.