Index handles "/users" route.

Show handles "/users/{username:[a-zA-Z0-9\\-_\\.]+}" route.

ShowCommits handles "/users/{username:[a-zA-Z0-9\\-_\\.]+}/commits" route.

ShowRepositories handles "/users/{username:[a-zA-Z0-9\\-_\\.]+}/repositories" route.

ShowScores handles "/users/{username:[a-zA-Z0-9\\-_\\.]+}/scores" route.