Docs: article - "Numerous undo possibilities in Git"
See the general Documentation guidelines http://docs.gitlab.com/ce/development/doc_styleguide.html
What does this MR do?
Adds a new community article to the docs.
Followup from https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/11149 and closes https://gitlab.com/gitlab-com/community-writers/issues/40
Screenshot here
cc/ @JobV for final approval
Edited by username-removed-236961