Docs: add product badges to docs

Closes #42631

See merge request gitlab-org/gitlab-ce!18408

Move Gitaly RefExists check to OPT_OUT

Closes gitaly#401

See merge request gitlab-org/gitlab-ce!18333

add initial dev task template for working on a security issue

Closes gitlab-org/release/docs#9

See merge request gitlab-org/gitlab-ce!18133

Update to Git 2.16.3 in doc/install/installation.md

See merge request gitlab-org/gitlab-ce!18434

Add QA tests for protected branches

See merge request gitlab-org/gitlab-ce!18301

Ignore `locale/gitlab.pot` in ee_compat_check

See merge request gitlab-org/gitlab-ce!18424

Remove ambiguity when forking a project to a user's namespace

See merge request gitlab-org/gitlab-ce!18426

Resolve "Improve wording / copy for running a pipeline"

Closes #21677

See merge request gitlab-org/gitlab-ce!18396

Add .org? method to Gitlab helper

See merge request gitlab-org/gitlab-ce!18429

Resolve "Collapsed diff spacing wrong when failed to load"

Closes #45271 and #45317

See merge request gitlab-org/gitlab-ce!18351

Fixed loading state not showing in IDE tree list

See merge request gitlab-org/gitlab-ce!18421

Merge branch '45363-optional-params-on-api-endpoint-produce-invalid-pagination-header-links' into 'master'

Fix URLs in the `Link` header for `GET /projects/:id/repository/contributors`   when no value is passed for `order_by` or `sort`

Closes #45363

See merge request gitlab-org/gitlab-ce!18393

dev_env_or_com? now considers dev.gitlab.org

Fix a case with empty secret CI/CD variables

Closes #31929

See merge request gitlab-org/gitlab-ce!18400

Signed-off-by: Rémy Coutable <remy@rymai.me>

[API] Fix URLs in the 'Link' header for 'GET /projects/:id/repository/contributors' when no value is passed for 'order_by' or 'sort'
Signed-off-by: Rémy Coutable <remy@rymai.me>

Fix the input confirmation validation for the delete branches modal

Closes #44985

See merge request gitlab-org/gitlab-ce!18176

Replace 'GKE' with 'Google Kubernetes Engine'

Closes #43567

See merge request gitlab-org/gitlab-ce!18292

Replace project builds permissions spinach with RSpec

See merge request gitlab-org/gitlab-ce!18306

Merge branch '45436-markdown-is-not-rendering-error-loading-viewer-undefined-method-html_escape' into 'master'

Resolve "Markdown is not rendering, "Error loading viewer": undefined method `html_escape'"

Closes #45436

See merge request gitlab-org/gitlab-ce!18418

Memoize Git::Repository#has_visible_content?

See merge request gitlab-org/gitlab-ce!18383

[Rails5] Fix `undefined method 'arel_table' for Ci::Group:Class` error

See merge request gitlab-org/gitlab-ce!18329

Conflicts can be resolved by running
`bundle exec rake gettext:find; git checkout locale/*/gitlab.po`

Add @tokiuji as Japanese proofreader

See merge request gitlab-org/gitlab-ce!18382

Merge branch '45406-error-getting-performance-bar-results-for-uuid-regularly-seen-in-production' into 'master'

Resolve ""Error getting performance bar results for [UUID]" regularly seen in production"

Closes #45406

See merge request gitlab-org/gitlab-ce!18419

Resolve "Pipeline table breaks when commit is not found"

Closes #43404

See merge request gitlab-org/gitlab-ce!18379

When a request contains an ETag value in its If-None-Match header, the backend
may send a request ID (from Rack) that does not correspond to a value in Peek's
Redis cache (because we aborted the Rails processing in our ETag middleware).

Because a cached response (304) has to replace the headers with those from the
previous 200 - https://tools.ietf.org/html/rfc7234#section-4.3.4 - we add a
custom header that will only be present in cache hits, that can tell the
frontend to ignore these.

Move PipelineFailed vue component

See merge request gitlab-org/gitlab-ce!18277

Method to track recoverable exceptions in sentry

See merge request gitlab-org/gitlab-ce!18391