Function equality

backend/src/types.rs:590–595

()

        #[test]
        fn equality() {
            assert_eq!(
                RepoId::wiki(),
                RepoId::try_from("32212616-fc1b-11e8-8eda-b70af6d8d09f").unwrap()
            );
        }

        #[test]
        fn relative_path() {