Support GitLab pages with external URL for environments
@DouweM's idea here: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5622/diffs?view=inline#note_13679005
The gist of it: if you can manually add external URLs, wouldn't it be cool if we could detect if a project deploys to GL Pages and fill in the URL for them?
Edited by 🤖 GitLab Bot 🤖