This has been broken since 34457b30, when the feature was implemented: a user
who can merge the MR may not have access to push to the source branch, and vice
versa.

This makes the backend check the correct thing (which the UI already did):
whether the user can push to the source branch.

[ci skip]

[ci skip]

Added CE to EE update guide for 9.4

See merge request !2407

The :caching metadata was renamed to :use_clean_rails_memory_store_caching

Closes #2901

See merge request !2403

Signed-off-by: Rémy Coutable <remy@rymai.me>

Update docs for different sshd_config path for Omnibus Docker.

See merge request !2400

CE upstream: Pre-9.4 RC1

Closes #2890, #2878, #2716, gitlab-ce#34847, gitaly#355, #2839, and gitlab-ce#32568

See merge request !2390

Closes #2890

[EE] Support multiple Redis instances based on queue type

See merge request !2312

Fix bad arguments passed to BackgroundMigrationWorker

See merge request !2398

According to the docs we should be passing an Array of Arrays:
https://gitlab.com/gitlab-org/gitlab-ee/blob/661a324d578be01742ec2d77bf0adeb59c69faea/app/workers/background_migration_worker.rb#L5-10

Implement progressive elasticsearch indexing for project mirrors

Closes #2881

See merge request !2393

* 9-4-stable: (41 commits)
  Also inject new route helpers into includers of GitlabRoutingHelper
  Remove many N+1 queries with merge requests API
  Change `sign_out` usage to `gitlab_sign_out` in one spec
  Simplify stage_id migration as we now use relations
  Do not schedule bg migration when it is not needed
  Schedule stage_id bg migrations in batches of 10
  Use new `each_batch` helper instead of custom one
  Revert recent changes in migration helpers
  Add some comments on new migrations helpers
  Schedule stage_id background migration in ranges
  Extract `execute_in_batches` migrations helper
  Add walk_table_in_batches and refactor migration helpers
  Reduce a delay between stage_id scheduled migrations
  Improve exception description in bg migrations
  Do not override original AR5 batching interface
  Sanitize id value passed to async background migration
  Improve code examples in background migrations docs
  Add description to exception in bg migrations worker
  Do not compare float with integer in migrations specs
  Improve readability of build stage id migration query
  ...

Conflicts:
	spec/features/boards/boards_spec.rb
	spec/features/issues/create_issue_for_single_discussion_in_merge_request_spec.rb
	spec/features/issues/user_uses_slash_commands_spec.rb
	spec/features/merge_requests/edit_mr_spec.rb
	spec/features/milestones/show_spec.rb
	spec/features/protected_tags_spec.rb

Port "Add variables to pipelines schedules" to EE

See merge request !2383

Merge remote-tracking branch 'origin-ee/feature/intermediate/32568-adding-variables-to-pipelines-schedules-ee' into ce-to-ee-2017-07-08

Port "Add Group secret variables" to EE

See merge request !2373

Show Slack button when there is no team added

See merge request !2381

Fix GitLab Slack application configuration

See merge request !2392

Exclude gitlab_git_test from docs only changes

See merge request !2371

Mark a subgroup-related spec as PostgreSQL-only

Closes #34847

See merge request !12722