Add my bigger changes of the last two weeks to the changelog

See https://gitlab.com/gitlab-org/gitlab-ce/merge_requests?assignee_id=&author_id=87854&label_name=&milestone_id=&scope=all&sort=created_desc&state=merged

mentioned in merge request !2053 (merged)

Status changed to closed by commit 746320ce

mentioned in commit 746320ce

mentioned in merge request !14785