Merge branch 'fix/group-visibility-ui-in-app-settings' into 'master'

Fix group visibility form layout in application settings

## What does this MR do?

This fixes UI consistency related to setting group visibility levels in application settings. See screenshots.

## Screenshots (if relevant)

#### Before

![visiblity_consistency](/uploads/9cf9b517e25cd661ac61bdd7ca2d82f4/visiblity_consistency.png)

#### After

![group_visibility_after](/uploads/7b317684d047716f2aa5e60d19a4281b/group_visibility_after.png)

See merge request !4848

CHANGELOG

@@ -72,6 +72,8 @@ v 8.9.1
   - Remove duplicate 'New Page' button on edit wiki page
 v 8.9.0
+v 8.9.0 (unreleased)
+  - Fix group visibility form layout in application settings
   - Fix builds API response not including commit data
   - Fix error when CI job variables key specified but not defined
   - Fix pipeline status when there are no builds in pipeline

app/views/admin/application_settings/_form.html.haml

@@ -15,7 +15,7 @@
       = f.label :default_snippet_visibility, class: 'control-label col-sm-2'
       .col-sm-10
         = render('shared/visibility_radios', model_method: :default_snippet_visibility, form: f, selected_level: @application_setting.default_snippet_visibility, form_model: ProjectSnippet.new)
-    .form-group.group-visibility-level-holder
+    .form-group.project-visibility-level-holder
       = f.label :default_group_visibility, class: 'control-label col-sm-2'
       .col-sm-10
         = render('shared/visibility_radios', model_method: :default_group_visibility, form: f, selected_level: @application_setting.default_group_visibility, form_model: Group.new)