Resolve "Add point of interest discussions to designs"

Closes #12731 and #9489

See merge request gitlab-org/gitlab-ee!14648

- changed image overlay
- created components for discussion and notes
- added tests
- refactored GraphQL queries structure

Alerts dropdown to modal EE2

Closes gitlab-ce#63197

See merge request gitlab-org/gitlab-ee!14858

Buttons and valid state go in there, so makes sense
for form to contain the modal

Resolve "DOCS Clarify usage of ElasticSearch with Gitaly non-NFS"

Closes #65606

See merge request gitlab-org/gitlab-ce!31454

Edit new troubleshooting doc

See merge request gitlab-org/gitlab-ce!31512

Cross link between cluster topics

Closes #65617

See merge request gitlab-org/gitlab-ce!31506

SSoT for customization docs

Closes #64588

See merge request gitlab-org/gitlab-ce!31308

Reviewed all docs in the customization section
and updated them to adhere to our SSoT standards.

Remove titles from security-links in sidebars

See merge request gitlab-org/gitlab-ee!14949

Update reliable fetcher

See merge request gitlab-org/gitlab-ce!31416

Add note about refactoring to board_service.js

See merge request gitlab-org/gitlab-ce!31468

Add note about refactoring to EE-specific board_service.js

See merge request gitlab-org/gitlab-ee!14993

MVC: Group and User Billing Page Improvement - Avatar and Name

Closes #12843 and #12797

See merge request gitlab-org/gitlab-ee!14660

Fix min approvals required for new MR rules

See merge request gitlab-org/gitlab-ee!14988

Both top-level navigation items that link to the projects'
and the group's security dashboard contain title-attributes.

This is inconsistent with the rest of the navigation.

This commit removes the title-attributes for both elements.

Docs: add addon minute roll over info

See merge request gitlab-org/gitlab-ce!31350

Remove some old feature flags from devops::secure

See merge request gitlab-org/gitlab-ee!14983

The corresponding features are running since several releases

Merge branch '65386-docs-add-elasticsearch-troubleshooting-to-administrator-troubleshooting-section' into 'master'

Docs-Add ElasticSearch Troubleshooting

Closes #65386

See merge request gitlab-org/gitlab-ce!31343

* Added elasticsearch.md
* Added reference to guide in Troubleshooting section

Allow approvals_required to be lower than project

See merge request gitlab-org/gitlab-ee!14902

MR level approvals_required are currently restricted to be higher
than project level approvals_required.

This removes that restriction so the logic will be simpler.

Use Rails 5.2 Redis caching store

Closes #64794

See merge request gitlab-org/gitlab-ce!30966

Fix links to unassigned, low weight issues for first time contributors

See merge request gitlab-org/gitlab-ce!31485

(Really) Fix Ruby 2.5 compatibility for diverging counts of branches

Closes #64143

See merge request gitlab-org/gitlab-ce!31491

We added retry_count increment when job is recovered