Prepare 10.4 RC3 release

See merge request gitlab-org/gitlab-ce!16334

CE rc3 with all missing commits

See merge request gitlab-org/gitlab-ce!16376

Merge branch '10-4-stable-prepare-rc3-with-missing-commits' of https://gitlab.com/gitlab-org/gitlab-ce into 10-4-stable-prepare-rc3-with-missing-commits

Revert "Merge branch '40418-migrate-existing-data-from-kubernetesservice-to-clusters-platforms-kubernetes' into 'master'"

This reverts commit 4b92efd9, reversing
changes made to 33cea509.

(cherry picked from commit 8f8ca9ee)

Run background migrations with a minimum interval

Closes #41624

See merge request gitlab-org/gitlab-ce!16230

(cherry picked from commit 8ff0c9b1)

7f30bb9c Run background migrations with a minimum interval

Protected branch is now created for default branch on import

Closes #3968

See merge request gitlab-org/gitlab-ce!16198

(cherry picked from commit 15f7f52b)

819fc98f Protected branch is now created for default branch on import

Add option to disable commit stats to commit API

Closes #41681

See merge request gitlab-org/gitlab-ce!16309

(cherry picked from commit 088de97c)

baeceb8b Adding stats param to the commit's endpoint
114cad58 Updated documentation
d5c5f2e6 Added specs
8f9e778a Added changelog

Improve SSH database key lookup documentation

Closes #41399

See merge request gitlab-org/gitlab-ce!16048

Fixing bug related to wiki last version

Closes #41477 and #41506

See merge request gitlab-org/gitlab-ce!16197

(cherry picked from commit 65b04860)

e44ca26f Fixing bug related to wiki last version
abe399b1 Added changelog
e471ec00 Restoring last version and created monkey patch
52c9dcb4 Fixed spec descriptions
5814d83c Updated monkey patch to work with paths with more than one dir
b9ff53c0 Updated specs
bc261232 Fixing offense

Fix changes dropdown ellipsis working across browsers

Closes #41561 and #41684

See merge request gitlab-org/gitlab-ce!16281

(cherry picked from commit 8de1bb9e)

500a3de7 Fix changes dropdown ellipsis working across browsers

Resolve "Timeout is not set for gitaly fetch_remote calls"

Closes #41683

See merge request gitlab-org/gitlab-ce!16245

(cherry picked from commit bd50ecba)

15ddfa2b Pass timeout to RepositoryService.FetchRemote Gitaly RPC calls

Update rack-cors from 0.4.0 to 1.0.2

Closes #41199

See merge request gitlab-org/gitlab-ce!16183

(cherry picked from commit af3a8f96)

ca235107 Update rack-cors from 0.4.0 to 1.0.2

10-4-stable-prepare-rc3 with weekend commits missing from RC1

See merge request gitlab-org/gitlab-ce!16335

Merge branch '39957-redirect-to-gpc-page-if-users-try-to-create-a-cluster-but-the-account-is-not-enabled' into 'master'

Resolve "Redirect to GCP page if users try to create a cluster but the account is not enabled"

Closes #39957 and #41410

See merge request gitlab-org/gitlab-ce!15665

Prepare 10.4 RC2 release

See merge request gitlab-org/gitlab-ce!16295

Remove unnecessary queries on Merge Request Metrics population scheduler

Closes gitlab-org/release/tasks#13

See merge request gitlab-org/gitlab-ce!16292

Fix error 500 when viewing commit and merge request diffs

Closes #41735

See merge request gitlab-org/gitlab-ce!16272

Merge branch '40418-migrate-existing-data-from-kubernetesservice-to-clusters-platforms-kubernetes' into 'master'

Migrate existing data from KubernetesService to Clusters::Platforms::Kubernetes

Closes #40418

See merge request gitlab-org/gitlab-ce!15589

Upgrade scss-lint to 0.56.0

Closes #41754

See merge request gitlab-org/gitlab-ce!16278

Run background migrations with a minimum interval

Closes #41624

See merge request gitlab-org/gitlab-ce!16230

Resolve "Allow QA tests to run with `CHROME_HEADLESS=false`"

Closes gitlab-qa#149

See merge request gitlab-org/gitlab-ce!16248

Resolve "No Rendering of emoji's in Group-Overview after update"

Closes #40549

See merge request gitlab-org/gitlab-ce!16098

Remove the Commit#tree method

See merge request gitlab-org/gitlab-ce!16236

Remove unused push_code_to_protected_branches

Closes #38056

See merge request gitlab-org/gitlab-ce!16253

Incorporate RemoteService.FetchInternalRemote Gitaly RPC

Closes gitaly#857

See merge request gitlab-org/gitlab-ce!16140

Move invites spinach test to Rspec

See merge request gitlab-org/gitlab-ce!16126

Move explore groups spinach test to RSpec

See merge request gitlab-org/gitlab-ce!16129

Resolve "Add graph value to hover"

Closes #38030

See merge request gitlab-org/gitlab-ce!16261

Fix slash commands dropdown description

See merge request gitlab-org/gitlab-ce!16125