[EE] Resolve "GroupsController#activity.json is REALLY slow due to SQL" (!1226) · Merge requests · GitLab.org / GitLab · GitLab

Do not update/delete: Banner broadcast message test data

Do not update/delete: Notification broadcast message test data

username-removed-128633 requested to merge 27395-reduce-group-activity-sql-queries-ee into master Feb 13, 2017

EE port of https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/9088