* make sure that last_for_board_id never returns nil value
* pass correct group id to the position service
* add test for moving a subepic
* fix getting proper relative position for selected board

Add the mutation and  Fill missing board positions
- Create Boards::Epics::PositionCreator which creates
epic board positions that are needed and missing
- Update Epics::UpdateService to call the created class
- Update/create new queries to get epics for the position creation

Merge branch '331130-follow-up-unify-status-checks-and-approval-rules-branch-selector-component' into 'master'

Unify status checks and approval rules protected branch selector component

See merge request gitlab-org/gitlab!62446

Refactor DAST on-demand CI config generation

See merge request gitlab-org/gitlab!61330

New Crowdin translations - 01 June 2021

See merge request gitlab-org/gitlab!62956

This updates the status checks specs to use the shared
protected branch selector's mock data and removes the
mock_data.js file in status checks specs dir.

Add an option to expose `description_html` in Release API [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!62802

Add wiki page diff url to Slack notification message

See merge request gitlab-org/gitlab!63082

This is to be used by the MR approval rules form and the status checks
form (behind a feature flag right now).

Use cluster integrations by default [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!62725

Ensure delay for all batches of UserRefreshOverUserRangeWorker jobs enqueued

See merge request gitlab-org/gitlab!63026

Remove Unicorn support: docs

See merge request gitlab-org/gitlab!61923

Set allure report generation jobs as non-blocking

See merge request gitlab-org/gitlab!63140

Rewrite introduction to multi-version compatibility

See merge request gitlab-org/gitlab!62726

add pipeline source to the CI_JOB_JWT

See merge request gitlab-org/gitlab!62754

Update Gitaly version

See merge request gitlab-org/gitlab!63158

Since UserRefreshOverUserRangeWorker uses a
data_consistency of `delayed`, it is important that
all enqueued jobs are performed after a delay.

This change ensures the same.

Changelog: other

Move constants into constants.js

See merge request gitlab-org/gitlab!63145

Remove feature flag usage_data_p_terraform_state_api_unique_users [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!62975

Moves overridden DB Load Balancing methods (project-related)

See merge request gitlab-org/gitlab!62741

Move Project#mark_primary_write_location to Core
Move non-stickiness in ProjectFeatureUsage to Core

Rename read_vulnerability to read_security_resource policy

See merge request gitlab-org/gitlab!58704

Remove stray `async` in test describe block

See merge request gitlab-org/gitlab!63142

Remove cached_sidebar_open_epics_count feature flag [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!62940

Set CSP back to disabled by default

See merge request gitlab-org/gitlab!62961

Remove feature flag create_cloud_run_clusters [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!62977

Move slash commands integrations to Integrations namespace

See merge request gitlab-org/gitlab!63015

Move overridden Load balancing calls in SidekiqMiddleware to Core

See merge request gitlab-org/gitlab!63110

Moved the repository constants into constants.js

Remove broken Workhorse Redis settings

See merge request gitlab-org/gitlab!63023

Fix query error on Rails 6.1

See merge request gitlab-org/gitlab!63139

Rearrange 'Security & Compliance' menu items

See merge request gitlab-org/gitlab!62448

Clarify guest user and guest role

See merge request gitlab-org/gitlab!63124

Co-locate similar incident management request spec files

See merge request gitlab-org/gitlab!63075

Fix "Security & Compliance" access for auditors

See merge request gitlab-org/gitlab!62837