Fix several ActionController::Parameters deprecations

See merge request gitlab-org/gitlab-ee!9347

Fix deprecation: uniq is deprecated and will be removed from Rails 5.1

See merge request gitlab-org/gitlab-ee!9348

Replace deprecated render text

See merge request gitlab-org/gitlab-ee!9346

UI changes and renamed section required changes

See merge request gitlab-org/gitlab-ee!9324

Port of CE changes for UI changes

See merge request gitlab-org/gitlab-ee!9325

Add Packages feature to landing page

See merge request gitlab-org/gitlab-ee!9349

Re-enable MethodCallWithoutArgsParentheses Cop

Closes gitlab-ce#56795

See merge request gitlab-org/gitlab-ee!9313

Surface link to auth section index

See merge request gitlab-org/gitlab-ee!9351

Merge branch '25569-changing-wording-to-delete-when-referring-to-removing-a-branch--docs' into 'master'

Change `remove branch` to `delete branch`

Closes #25569

See merge request gitlab-org/gitlab-ce!24574

Fix SAST use cases in documentation

See merge request gitlab-org/gitlab-ee!8979

Fix failed LDAP logins when nil user_id present

Closes #56734

See merge request gitlab-org/gitlab-ce!24749

Resolve "Pipeline stages job action button icon is not aligned"

Closes #56379

See merge request gitlab-org/gitlab-ce!24577

[Part 6] Add support for Participants list and Subscription in Epic sidebar

See merge request gitlab-org/gitlab-ee!9329

Resolve "Redesign group overview UI: MVC"

Closes #53104

See merge request gitlab-org/gitlab-ce!23866

Re-enables and autocorrects all instances of the
Style/MethodCallWithoutArgsParentheses rule

Use a Serializer for related issues/epics

Closes #8525

See merge request gitlab-org/gitlab-ee!9298

Convert noteable_discussion_spec.js to Vue test utils

See merge request gitlab-org/gitlab-ce!24765

Quarantine auto devops QA tests

See merge request gitlab-org/gitlab-ce!24786

Added missing parameter cluster_id in the params list for edit project cluster endpoint

See merge request gitlab-org/gitlab-ce!24731

Use serializers for:
- EpicLinks
- EpicIssueLinks
- IssueLinks

Docs: Minor fix to formatting

See merge request gitlab-org/gitlab-ce!24696

Add script to remove all subgroups within a provided group

See merge request gitlab-org/gitlab-ce!24593

Revert the "What's new" feature

See merge request gitlab-org/gitlab-ce!24772

EE Revert the "What's new" feature

See merge request gitlab-org/gitlab-ee!9339