Load participants async

Closes #23206

See merge request gitlab-org/gitlab-ce!14836

Fix missing issue assignees

Closes #39170

See merge request gitlab-org/gitlab-ce!15109

Fix overlap of right-sidebar and wiki create page form

Closes #39509

See merge request gitlab-org/gitlab-ce!15075

Adds project_id to pipeline hook data

Closes #31454

See merge request gitlab-org/gitlab-ce!15044

Allow promoting project milestones to group milestones

Closes #38777

See merge request gitlab-org/gitlab-ce!14831

Migrate Gitlab::Git::Wiki#delete_page to Gitaly

Closes gitaly#673

See merge request gitlab-org/gitlab-ce!14910

Handle large values on `MergeRequestDiffCommit` dates

Closes #39561

See merge request gitlab-org/gitlab-ce!15093

Fix example typo.

See merge request gitlab-org/gitlab-ce!15104

Remove issue and issue status select from global namespace

See merge request gitlab-org/gitlab-ce!15090

Hashed Storage support for Attachments

See merge request gitlab-org/gitlab-ce!15068

Adds callback function to initial cluster request

Closes #39639

See merge request gitlab-org/gitlab-ce!15105

Fix namespacing for MergeWhenPipelineSucceedsService in MR API

Closes #39619

See merge request gitlab-org/gitlab-ce!15088

Add Packagist project service

See merge request gitlab-org/gitlab-ce!14493

Closes gitaly#673

Upload files through the multi-file editor

Closes #38629 and #38614

See merge request gitlab-org/gitlab-ce!14975

Merge branch '39593-emails-on-push-are-sent-to-only-the-first-recipient-when-using-aws-ses' into 'master'

Resolve "Emails on Push are sent to only the first recipient when using AWS SES"

Closes #39593

See merge request gitlab-org/gitlab-ce!15083

Resolve "Convert autosize.js library to be a Yarn managed library"

Closes #39616

See merge request gitlab-org/gitlab-ce!15087

Revert "Merge branch '2518-saved-configuration-for-issue-board' into 'master'"

See merge request gitlab-org/gitlab-ce!15092

Fix https://gitlab.com/gitlab-org/gitlab-ce/issues/39509

Pipeline hook data now includes the project_id

This reverts merge request !15009

Enable NestingDepth (level 6) on scss-lint

Closes #39582

See merge request gitlab-org/gitlab-ce!15073

Refresh open Issue and Merge Request project counter caches when re-opening

Closes #39583

See merge request gitlab-org/gitlab-ce!15085