Update discordrb-webhooks gem

See merge request gitlab-org/gitlab!54352

We previously used a forked version which relaxes the rest-client
dependency, this is not needed anymore.

Update the main Agent page

See merge request gitlab-org/gitlab!52441

Add docs for JWT token

See merge request gitlab-org/gitlab!54465

Add Azure Active Directory v2 OAuth2 support

See merge request gitlab-org/gitlab!54265

This brings in the OmniAuth provider defined in
https://github.com/RIPGlobal/omniauth-azure-activedirectory-v2. The v1
endpoints do not seem to trigger MFA, which prevents logins when MFA is
enforced via Azure's Conditional Access policy.

Note that existing identities with the legacy V1 Azure provider do not
work, and users will either have to reconnect their GitLab accounts or
admins have to enable the auto-link feature.

Note that the following permission scopes are required for the
registered Web application:

1. profile
2. openid
3. email

In addition, a redirect URI for
`/users/auth/azure_activedirectory_v2/callback` has to be added to the
Web application.

Relates to:

1. https://gitlab.com/gitlab-org/gitlab/-/issues/214390
2. https://gitlab.com/gitlab-org/gitlab/-/issues/215674

Add Auto DevOps link to CI/CD Overview

See merge request gitlab-org/gitlab!54474

Add link to Auto DevOps top-level doc page.

Apply GitLab UI button styles to buttons in ee/app/views/subscriptions/groups directory

See merge request gitlab-org/gitlab!51784

Add inline search to project and group settings

See merge request gitlab-org/gitlab!54328

Documentation: Include a note about DigitalOcean block storage volume limits

See merge request gitlab-org/gitlab!54218

Update Aggregated Metrics documentation

See merge request gitlab-org/gitlab!53835

Attempt a first revision to bring the new sections closer to GitLab
tone and style. Hard wraps on lines. Make list items parallel when
possible. Add punctuation and smooth out grammar.

Move example Marginalia comments to the front

See merge request gitlab-org/gitlab!54316

Docs: ElasticSearch URL credentials need pct. encoding

See merge request gitlab-org/gitlab!54478

Support automatic transitions of Jira issues

See merge request gitlab-org/gitlab!53760

If no custom transition IDs are configured, check the available
workflow transitions on the issue and use the first one with a status
category of "Done".

Use project's group as actor for remove_comment_close_reopen flag

See merge request gitlab-org/gitlab!54066

Remove autodevops popover link href props

See merge request gitlab-org/gitlab!54225

Enable FF skip_dag_manual_and_delayed_jobs by default

See merge request gitlab-org/gitlab!54073

Improve iteration group by label UI

See merge request gitlab-org/gitlab!52009

- Adds issue's labels to label grouping list
- Adds light gray background to label grouping list
- Fixes scoped label rendering
- Adds page specific CSS to override GlLabel style in GlAlert

Discussion of UI changes:
https://gitlab.com/gitlab-org/gitlab/-/merge_requests/51113#note_485816203

Simplify test and add wait and retry logics

See merge request gitlab-org/gitlab!53794

Automatically vendored project templates / express 2021-02-08

See merge request gitlab-org/gitlab!53633

Automatically vendored project templates / dotnetcore 2021-02-08

See merge request gitlab-org/gitlab!53652

Percentage encoding gets required for all special characters used in the
username or password supplied in the ElasticSearch URL.

Allow uploads from empty repo state [RUN ALL RSPEC] [RUN AS-IF-FOSS]

See merge request gitlab-org/gitlab!52755

Add page specific styles to project discover security page

See merge request gitlab-org/gitlab!54460

Lower SAML SSO session expiry to one day

See merge request gitlab-org/gitlab!54374

Add Auto DevOps link to manual process pages

See merge request gitlab-org/gitlab!54470

Ensure manual pages have link to Auto DevOps page.

Skip orphaned pool repositories on restore

See merge request gitlab-org/gitlab!54112

Docs: Link release page at end of upgrade path

See merge request gitlab-org/gitlab!54436

Update docs regarding Web IDE themes

See merge request gitlab-org/gitlab!52946

Deleted doc/user/project/web_ide/img/solarized_light_theme_v13_0.png

Add information in regards to the cilium alerts

See merge request gitlab-org/gitlab!54024