Merge pull request #2 from skqr/feature/api-59-to-one-urls

[API-59] To one relationship URLs
Merge pull request #3 from skqr/feature/api-59-to-one-urls

[API-59] To one relationship URLs
Merge pull request #4 from skqr/feature/api-59-to-one-urls

[API-59] To one relationship URLs