(CE port) Resolve "New user flow for SSOing into a GitLab.com group"

See merge request gitlab-org/gitlab-ce!26578

- Add .no-tabs to login-box
- Externalize strings in common signup box
- Leverage render_if_exists
- Update PO file

Resolve "Moving an issue results in broken image links in comments"

Closes #57825

See merge request gitlab-org/gitlab-ce!28654

CE-port of Refactor EE specific params override in API::Groups

See merge request gitlab-org/gitlab-ce!28610

i18n boards store directory

See merge request gitlab-org/gitlab-ce!28712

Edit account limit settings to comply with SSOT guidelines

See merge request gitlab-org/gitlab-ce!28532

Add details of the Admin Area's *Users* page

See merge request gitlab-org/gitlab-ce!28509

Add LFS pull mirroring to docs

See merge request gitlab-org/gitlab-ce!28686

Remove the circuit breaker API

Closes #52467

See merge request gitlab-org/gitlab-ce!28669

Resolve "Style secondary button type to be aligned with pattern library"

See merge request gitlab-org/gitlab-ce!27920

Fix bug candidates of forms on Bootstrap Grid system

Closes #57189

See merge request gitlab-org/gitlab-ce!24885

Added parent table row to files table

See merge request gitlab-org/gitlab-ce!28658

Masked should be Boolean type

See merge request gitlab-org/gitlab-ce!28758

This is one of many MRs opened in order to improve the overall
internationalisation of the GitLab codebase.

This commit only targets Vanilla JS files.

i18n documentation
https://docs.gitlab.com/ee/development/i18n/externalization.html

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

Signed-off-by: Takuya Noguchi <takninnovationresearch@gmail.com>

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

As documented in
https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/api/project_level_variables.md#create-variable
and it's a boolean in `db/schema.rb`