Add sort system + button

[Marcelobernard]

I noticed in the request that someone was asking for a sorting system for the website. I'm not sure if I understood the request correctly, but I have implemented a user-friendly button that allows sorting either alphabetically or by the number of forks in the repository.

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[MehulKChaudhari]

We use Ember Styleguide in our project and avoid writing own css

It would be great to follow the same approach here for consistency and to maintain a uniform design across all projects.