Updated GitHub API usage to use modern authentication and avoid deprecation warning e-mails.

We’ve long relied on the original methods for passing authentication credentials to GitHub’s API. These were recently deprecated, and as of this week GitHub has been e-mailing information about this deprecation to people whose accounts are linked for repositories.

This release employs the modern method, avoiding the e-emails. Future changes will build upon this to begin adjusting to more of GitHub’s modern authentication requirements.

Removed Google Code and Fedora Hosted from the repository configuration page.

These services haven’t been around for a while, but we’ve continued to list them for compatibility reasons. This release finally removes them from the list of available hosting services.