Remove switch to basic search link

See merge request gitlab-org/gitlab!43236

Include alert source in system note if available

See merge request gitlab-org/gitlab!42631

Remove usage of Gitlab::Alerting::NotificationPayloadParser

See merge request gitlab-org/gitlab!42527

Apply gitlab button style to buttons in app/views/discussions directory

See merge request gitlab-org/gitlab!42714

Add system note for review requests

See merge request gitlab-org/gitlab!42589

Update git_push_create_all_pipelines feature flag details

See merge request gitlab-org/gitlab!43252

Allow designs to be mutated when issue is moved/locked

See merge request gitlab-org/gitlab!42935

Migrate badge list row buttons to new buttons

Closes #229311

See merge request gitlab-org/gitlab!43072

Migrate to GlButton in the "Change username" section in Account Settings

Closes #229326

See merge request gitlab-org/gitlab!42009

Add group and introduced_by_url to geo feature flag

See merge request gitlab-org/gitlab!43150

Add standard way to find DastScannerProfiles

See merge request gitlab-org/gitlab!41633

Add additional info to allow_possible_spam feature flag

See merge request gitlab-org/gitlab!43142

Add ability to sort vulnerabilities by detected_at

See merge request gitlab-org/gitlab!42950

This change adds ability to sort vulnerabilities by detected at in
GraphQL.

205151-match trailing slash in GitLab-Flavored Markdown References

See merge request gitlab-org/gitlab!42484

Update package group feature flag summaries

See merge request gitlab-org/gitlab!43201

Add details of FF ci_merge_train_logging

See merge request gitlab-org/gitlab!43192

This was originally implemented as a back up because we were concerned
about the reliability of Elasticsearch. We assumed it would be safe to
add this link just in case our Elasticsearch experience was consistently
bad.

But it turned out that we forgot to ever turn the feature flag on and
our Elasticsearch has been quite robust anyway. As such we may as well
remove the feature now.

We still keep the hidden feature where the user can manually add a
`basic_search=true` to the URL to get the basic search functionality
because this is still useful for diagnostic purposes but we don't need
to provide a link to this as it's not something most people will need to
use.

Improve detection of similarity sorting in GraphQL

Closes #244853

See merge request gitlab-org/gitlab!43041

Improve performance on toggling left sidebar tabs in Web IDE

See merge request gitlab-org/gitlab!42873

Otherwise rendering and destroying the sidebar for large repos
becomes very expensive.

Update prometheus-client-mmap to v0.12.0

See merge request gitlab-org/gitlab!42948

Update discover security feature flag yaml

See merge request gitlab-org/gitlab!43132

Update SCA group feature flags YAML files

See merge request gitlab-org/gitlab!43133

Add ability to sort vulnerabilities by title

See merge request gitlab-org/gitlab!42953

This change adds ability to sort vulnerabilities by title in
GraphQL.

Use random group path to avoid 400 on repeated deletion

Closes #254808

See merge request gitlab-org/gitlab!43086

Use let_it_be for developer2 in interpret_service_spec.rb

See merge request gitlab-org/gitlab!42966

Add feature flag details for group::configure

See merge request gitlab-org/gitlab!43198

Detect problems with polymorphic epic trees

See merge request gitlab-org/gitlab!42083

Update anonymous feedback feature flag

See merge request gitlab-org/gitlab!43168

Add details for resource_access_token FF

See merge request gitlab-org/gitlab!43216

Remove restricted_snippet_scope_search flag

See merge request gitlab-org/gitlab!43153

Add group::editor feature flag info

See merge request gitlab-org/gitlab!43148

Migrate "Recover hidden stage" dropdown

See merge request gitlab-org/gitlab!43032