Replace 'source/search_code.feature' spinach test with an rspec analog

See merge request !13697

Docs update links guideline to inline links

Closes gitlab-com/gitlab-docs#121

See merge request !13677

Add deprecation note in renaming sections for CI_BUILD_* variables

Closes #36973

See merge request !13801

Handle creating a nested group on MySQL correctly

See merge request !13829

Authorizations regarding OAuth - style confirmation

Closes #35721

See merge request !13691

Fix group and project search for anonymous users

Closes #31409

See merge request !13745

Add support for copying permalink to notes via more actions dropdown

Closes #35811

See merge request !13299

Adjust a range and a batch sizes in stages statuses migration

Closes #36793

See merge request !13767

Fix failure when issue author is nil

See merge request !13807

Docs: update - fix headers

See merge request !13819

Since we don't support nested groups on MySQL, raise an error
explaining that on import instead of trying anyway.

Fix searching for files by path

Closes #36939

See merge request !13798

Remove leftover API helper for removed CI API

See merge request !13804

Re-allow appearances.description_html to be NULL

Closes #36919

See merge request !13806

Set a default CI/CD status when it is not known

Closes #36790

See merge request !13737

Fix invite by email address duplication

Closes #36937

See merge request !13826

Use gitaly-proto 0.31.0

See merge request !13795

Reword job to pipeline on the chart view

Closes #36928

See merge request !13786

This reverts merge request !13812

Reenable MySQL tests on all CE and EE branches

Closes #36384

See merge request !13812

This reverts merge request !13813

New doc: how to install GitLab on Azure

See merge request !13811

Add `:nested_groups` metadata to `Groups::NestedCreateService` specs

See merge request !13809

Changed the styling of OAuth authorization page in order to follow
the styling structure described in #28849.

Enable 5 lines of Sidekiq backtrace lines to aid in debugging

Closes #27626

See merge request !13813

Customers often have Sidekiq jobs that failed without much context. Without
Sentry, there's no way to tell where these exceptions were hit. Adding
in additional lines adds a bit more Redis storage overhead. This commit
adds in backtrace logging for workers that delete groups/projects and
import/export projects.

Closes #27626

To protect master from surprise failures, as long as we continue to support MySQL.

Alternative fix for 422 when using standard login with ldap enabled

See merge request !13103

This column isn't always set (e.g. when upgrading from older instances)
and technically it could be NULL (e.g. when flushing the cache).

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/36919