`#repository_updated!` receives `type` instead of `event

Rails5: fix Arel::UpdateManager in MigrateOldElasticsearchSettings migration

See merge request gitlab-org/gitlab-ee!6815

Rails5: fix slice in burndown fixture

See merge request gitlab-org/gitlab-ee!6813

Todos epic

Closes #5481

See merge request gitlab-org/gitlab-ee!6542

Fix bug related to size check of repositories and files

Closes #6459 and #6780

See merge request gitlab-org/gitlab-ee!6767

EE port for: 48098 Mutual auth cluster applications

See merge request gitlab-org/gitlab-ee!6716

Instead of invoking git commands from GitLab we are now invoking the
`list_new_blobs` RPC from Gitaly that will return all the blobs found in
the new revision that's being used for the push operation.

With this change we're also fixing a bug by making push size checks only count the size of newly-pushed files

EE Port of: Resolve "System level labels UI broken"

See merge request gitlab-org/gitlab-ee!6805

Override elasticsearch setting for STI note models

Closes #5705

See merge request gitlab-org/gitlab-ee!6736

Ee 36409 frontend for clarifying the usefulness of the search bar

See merge request gitlab-org/gitlab-ee!6772

CE upstream - 2018-08-07 00:21 UTC

See merge request gitlab-org/gitlab-ee!6817

Code Quality is supported on GitLab >= 10.4

Closes gitlab-ce#49516

See merge request gitlab-org/gitlab-ee!6809

need redis[master_password] instead of redis[password]

See merge request gitlab-org/gitlab-ee!6791

adding some output to repmgr master check command

See merge request gitlab-org/gitlab-ee!6769

Resolve "Increase width of left column in reports modal"

Closes #7128

See merge request gitlab-org/gitlab-ee!6808