Update Docker Hub and Engine links (!4083) · Merge requests · GitLab.org / GitLab FOSS · GitLab

Do not update/delete: Banner broadcast message test data

Do not update/delete: Notification broadcast message test data

username-removed-100770 requested to merge tnir/gitlab-ce:update-docker-hub-link into master May 07, 2016

Update all links to Docker Hub.
Update or rename Docker with Docker Engine.