EE Port: Add Saturday to first day of the week
What does this MR do?
Ports https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/25509/ to EE.
What are the relevant issue numbers?
Edited by 🤖 GitLab Bot 🤖
Ports https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/25509/ to EE.