Move diff header actions into dropdown menu

Closes #199725

See merge request gitlab-org/gitlab!42483

Cleans up the diff header by moving the action buttons
into a more actions dropdown.

Closes https://gitlab.com/gitlab-org/gitlab/-/issues/199725

Improve spec performance in `issues_spec.rb`

See merge request gitlab-org/gitlab!43082

- fix some flakey specs

Merge branch '229325-migrate-bootstrap-button-to-gitlab-ui-glbutton-in-app-assets-javascripts-notes-components' into 'master'

Migrate MR threads toolbar to GitLab UI

See merge request gitlab-org/gitlab!41658

Also remove unused styles and classes

Improve snippet presenter spec with repo data

See merge request gitlab-org/gitlab!43255

Allowlist GitLab-owned bots for SpamActionService

See merge request gitlab-org/gitlab!42905

Add group for threat management feature flags

See merge request gitlab-org/gitlab!43247

Add filtering vulnerabilities for autocomplete in Vulnerabilities Finder

See merge request gitlab-org/gitlab!42200

This change extends VulnerabilitiesFinder to accept current_user
parameter that is used in FinderMethods to filter only vulnerabilities
that are accessible by the user.

Revise tooltip text of note role badge

Closes #251092

See merge request gitlab-org/gitlab!42771

Merge branch '236003-tribute-mentions-long-usernames-make-the-autocomplete-menu-very-wide' into 'master'

Improve tribute @mentions UX

See merge request gitlab-org/gitlab!39998

The @mentions autocomplete menu becomes very wide when groups with
very long display names or paths are in the list. This change
reduces the width by only showing the leaf group names.

Update incident management features

Closes #251080

See merge request gitlab-org/gitlab!43137

Show wiki tree structure in sidebar and pages overview

See merge request gitlab-org/gitlab!42867

Fix Webpack not working over HTTPS in development

See merge request gitlab-org/gitlab!43197

Update web_ide_primary_edit feature flag docs

See merge request gitlab-org/gitlab!43268

Docs: Update spacing and formatting for tables

See merge request gitlab-org/gitlab!43194

Update design_management_allow_dangerous_image YML

See merge request gitlab-org/gitlab!43213

Support per-blob queries in snippets

See merge request gitlab-org/gitlab!42809

In order to retrieve single or multiple blobs
from snippets and avoid retrieving all at the
same time, we add a resolver to the blobs field in the
snippet type.

We can now pass a string or an array of files to retrieve.

Update product_analytics FF metadata

See merge request gitlab-org/gitlab!43215

Add details for `group_administration_nav_item` FF

See merge request gitlab-org/gitlab!43225

Update alert GFM reference in highlight bar

See merge request gitlab-org/gitlab!43104

Add reverting vulnerability to detected on single vulnerability page

See merge request gitlab-org/gitlab!41794

Add npm request forwarding to snowplow

See merge request gitlab-org/gitlab!40174

Add API to revert vulnerability to detected state

See merge request gitlab-org/gitlab!41784

This change adds new API (vulnerabilities/:id/revert) to revert
vulnerability back to reverted state.

Remove old DAST profiles routes

See merge request gitlab-org/gitlab!42123

Replaces `WikiPage.group_by_directory` with `WikiDirectory.group_pages`,
which groups the pages recursively by their path.

The views were already set up for recursive partials, so we only had
to change them to show the basename of each directory, rather than
their full path. This is done through a new `WikiDirectory#title`
helper.

Update Product Analytics features

See merge request gitlab-org/gitlab!42811

  - additional_snowplow_tracking
  - save_raw_usage_data
  - usage_data_api

Updated group for FF

See merge request gitlab-org/gitlab!43140