Add developmenty documentation about routing

See merge request gitlab-org/gitlab-ce!28533

Explain and recommend developers to use `/-/` scope for group and
project routes in Rails
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Add benchmark-memory Ruby gem

See merge request gitlab-org/gitlab-ce!28762

Resolve "Validate k8s credentials provided at cluster creation"

Closes #55447

See merge request gitlab-org/gitlab-ce!27403

Added a changelog entry for the feature

Add expand/collapse button to error tracking settings

See merge request gitlab-org/gitlab-ce!28619

Add ability to expand/collapse error tracking settings

Add Object.entries polyfill for IE11 compatibility

See merge request gitlab-org/gitlab-ce!28732

Be explicit about setting :masked

See merge request gitlab-org/gitlab-ce!28759

Edit Admin Area *Labels* to comply with SSOT guidelines

See merge request gitlab-org/gitlab-ce!28528

Edit admin index to comply with SSOT guidelines

See merge request gitlab-org/gitlab-ce!28569

Update import.md - fix documented mkdir command so it can succeed

See merge request gitlab-org/gitlab-ce!28616

Docs - dedicated GitLab Managed Apps page

See merge request gitlab-org/gitlab-ce!28103

So we can add detailed information, and also point to SSOT

Added Geo troubleshooting instructions

See merge request gitlab-org/gitlab-ce!28491

Added instructions cover all existing error messages from health check
status errors that can appear in the Geo Node admin UI

Update path to Usage Statistics in Admin Settings

See merge request gitlab-org/gitlab-ce!28568

In addition to API, add support for toggling mased on UI too.

(Though fabricate_via_browser_ui is private)

Edit Admin Area's *Health Check* content for SSOT

See merge request gitlab-org/gitlab-ce!28531

Edit License details to comply with SSOT guidelines

See merge request gitlab-org/gitlab-ce!28529

Only some values can be masked. Currently API defaults :masked to false
and browser defaults :masked to true - resolve this ambiguity by
requiring QA to be explicit about which value it requires for :masked.

Updating import-export doc page with better screenshots and updated information

See merge request gitlab-org/gitlab-ce!27777

sast/index.md: link to current repository for "bandit" (Python tool)

See merge request gitlab-org/gitlab-ce!28451

Docs: Make wording familiar to Salesforce admins

See merge request gitlab-org/gitlab-ce!28584

Use "Salesforce" (lowercase 'f')

Use Salesforce help doc language to navigate setup menu

Clarify to use callback url matching the GitLab installation url

Update proofreader.md

See merge request gitlab-org/gitlab-ce!28649

Docs: Put back deleted HA images

Closes #62261

See merge request gitlab-org/gitlab-ce!28692

I18N JS files starting with u

See merge request gitlab-org/gitlab-ce!28177

Fix MR widget padding

Closes #58632

See merge request gitlab-org/gitlab-ce!28472

Add source and gdk installations to components

See merge request gitlab-org/gitlab-ce!28691