Mention the forked_from_project field in projects API (!20399) · Merge requests · GitLab.org / GitLab FOSS · GitLab

Achilleas Pipinellis - OOO until November 25th (parental leave) requested to merge docs/api-mention-forked-from into master Jul 05, 2018

What does this MR do?

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/41490