Add tier badge and do cleanup on settings page

Add tier badge and do cleanup on settings page

doc/administration/user_settings.md

@@ -4,40 +4,56 @@ group: Access
 info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
 ---
 
-# Modifying global user settings
+# Modify global user settings **(FREE SELF)**
 
 GitLab administrators can modify user settings for the entire GitLab instance.
 
-## Disallow users creating top-level groups
+## Prevent users from creating top-level groups
 
-By default, new users can create top-level groups. To disable this, modify the appropriate configuration file,
-and then [reconfigure and restart GitLab](restart_gitlab.md).
+By default, new users can create top-level groups. To disable your users'
+ability to create top-level groups:
 
-For Omnibus installations, add the following to `/etc/gitlab/gitlab.rb`:
+**Omnibus GitLab installations**
 
-```ruby
-gitlab_rails['gitlab_default_can_create_group'] = false
-```
+1. Edit `/etc/gitlab/gitlab.rb` and add the following line:
 
-For source installations, uncomment the following line in `config/gitlab.yml`:
+   ```ruby
+   gitlab_rails['gitlab_default_can_create_group'] = false
+   ```
 
-```yaml
-# default_can_create_group: false  # default: true
-```
+1. [Reconfigure and restart GitLab](restart_gitlab.md#omnibus-installations).
 
-## Disallow users changing usernames
+**Source installations**
 
-By default, new users can change their usernames. To disable this, modify the appropriate configuration file,
-and then [reconfigure and restart GitLab](restart_gitlab.md).
+1. Edit `config/gitlab.yml` and uncomment the following line:
 
-For Omnibus installations, add the following to `/etc/gitlab/gitlab.rb`:
+   ```yaml
+   # default_can_create_group: false  # default: true
+   ```
 
-```ruby
-gitlab_rails['gitlab_username_changing_enabled'] = false
-```
+1. [Restart GitLab](restart_gitlab.md#installations-from-source).
 
-For source installations, uncomment the following line in `config/gitlab.yml`:
+## Prevent users from changing their usernames
 
-```yaml
-# username_changing_enabled: false # default: true - User can change their username/namespace
-```
+By default, new users can change their usernames. To disable your users'
+ability to change their usernames:
+
+**Omnibus GitLab installations**
+
+1. Edit `/etc/gitlab/gitlab.rb` and add the following line:
+
+   ```ruby
+   gitlab_rails['gitlab_username_changing_enabled'] = false
+   ```
+
+1. [Reconfigure and restart GitLab](restart_gitlab.md#omnibus-installations).
+
+**Source installations**
+
+1. Edit `config/gitlab.yml` and uncomment the following line:
+
+   ```yaml
+   # username_changing_enabled: false # default: true - User can change their username/namespace
+   ```
+
+1. [Restart GitLab](restart_gitlab.md#installations-from-source).