Fixes merge request controls not being visible

See merge request gitlab-org/gitlab!61030

Added qualifier to sentence about use of common library

See merge request gitlab-org/gitlab!61653

Added additional links to secure documentation

See merge request gitlab-org/gitlab!61652

Create threat alert drawer

See merge request gitlab-org/gitlab!61183

Document how to use cascading settings framework on the frontend

See merge request gitlab-org/gitlab!61418

Remove vestigial references to deprecated jQuery dropdown in Repository -> Compare

See merge request gitlab-org/gitlab!61416

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

See merge request gitlab-org/gitlab!55952

[VSA] Show record count for the stage (FE)

See merge request gitlab-org/gitlab!60598

Resolve "Fix inconsistent cancel merge train button label"

See merge request gitlab-org/gitlab!61597

Omit trailing slash when checking allowed requests in the read-only middleware [RUN ALL RSPEC]

See merge request gitlab-org/gitlab!61641

Use ConnectionHandler class to establish connection

This is for forward compat with Rails 6.1: 
`ActiveRecord::ConnectionAdapters::ConnectionSpecification::Resolver` 
no longer exists in Rails 6.1

Related issue: 
https://gitlab.com/gitlab-org/gitlab/-/issues/329572

See merge request gitlab-org/gitlab!61323

Fix warnings in custom generator for metrics definition

See merge request gitlab-org/gitlab!60458

Document new DAST API analyzer

See merge request gitlab-org/gitlab!59044

Customize settings for Advanced Search reindex operations

See merge request gitlab-org/gitlab!60730

Add username & password fields for Advanced Search

See merge request gitlab-org/gitlab!60710

- add more robust CSS styling for the header height
- add specific errors for different failures
- add sentry calls on error
- update documentation
- update tests

Fix sort params in issues page refactor

See merge request gitlab-org/gitlab!61369

In https://gitlab.com/gitlab-org/gitlab/-/merge_requests/61638, we
restored the behavior and omitted the trailing slash when proxying
pre-authorized routes with no suffix.

These changes add an extra layer of safety and omit the trailing
slash on the read-only middleware.

Changelog: fixed

Update Threat monitoring alert docs for the updated alert table

See merge request gitlab-org/gitlab!61622

Part 2 - Artifact download migration to graphql

See merge request gitlab-org/gitlab!61169

Add keep_alive_slots component

See merge request gitlab-org/gitlab!61637

Use utility classes in job app

See merge request gitlab-org/gitlab!61532

Add missing step in upgrade path for 13.2 example docs

See merge request gitlab-org/gitlab!61486

Replaced node with site to align with our defined terms on setup page

See merge request gitlab-org/gitlab!53483

Improve the incremental rollout part in the feature flag rollout template

See merge request gitlab-org/gitlab!61586

Enable notification_setting_recipient_refactor by default [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!61443