Docs: port article to EE

See merge request !2799

Change wording about the ssh key of Geo nodes admin page

Closes #3290

See merge request !2794

Merge branch '31273-creating-an-project-within-an-internal-sub-group-gives-the-option-to-set-it-a-public-ee' into 'master'

Port of "Resolve various visibility level settings issues" to EE

See merge request !2793

Add missing import statements

Closes #3268

See merge request !2791

Closes gitlab-org/gitlab-ee#3290.

Make namespace dropdown on new project page consistent

See merge request !2789

EE:  Remove unwanted refs after importing a project

See merge request !2792

Promote EE features

Closes #2887, #2888, #2918, #2966, #2987, #2988, and #2967

See merge request !2540

Move EE specific files (_ee) to the EE directory

See merge request !2673

Port of remove-sidebar-title to EE

See merge request !2672

* 36807-gc-unwanted-refs-after-import:
  Use `git update-ref --stdin -z` to delete refs
  Just use a block
  Fix tests
  Try to make reserved ref names more obvious
  Resolve feedback on the MR:
  Move to Projects::HousecleaningService
  Use block rather than just b
  Just use @project directly
  Just use methods over constants, so that we could
  Add changelog and tests
  Remove unwanted refs after importing a project

Adds CE to EE compatibility with 2756

See merge request !2788

EE API delete respect headers

See merge request !2782

Add my-reaction filter (EE)

Closes #1938

See merge request !2778

Merge branch '3233-project-mirror-not-actually-active-when-new-project-is-created-fix' into 'master'

Fixes activation of project mirror when project is created.

Closes #3233

See merge request !2756