User Dashboard: Github Repositories

[mikedao]

Details: A user exists in the database. They have a Github token stored. Generate a token here for testing and development: https://github.com/settings/tokens

A future story will implement generating these tokens dynamically but that isn't necessary here.

As a logged in user
When I visit /dashboard
Then I should see a section for "Github"
And under that section I should see a list of 5 repositories with the name of each Repo linking to the repo on Github

• [x] API call uses: https://developer.github.com/v3/repos/#list-your-repositories
• [x] API call DOES NOT use: https://developer.github.com/v3/repos/#list-user-repositories
• [x] No hashes in the view.
• [x] Uses objects in the view to represent the Repos.
• [x] Edge case: Make sure this shows the proper repositories when there are more than one user in the database with different tokens.
• [x] Don't display the "Github" section if the user is missing a Github token