Add “staff” badge to admin user pages (#5735)

* Allow staff badge to change from setting to hidden

* i18n: Update Polish translation

app/views/accounts/_header.html.haml

@@ -27,14 +27,15 @@
         %span @#{account.local_username_and_domain}
         = fa_icon('lock') if account.locked?
 
-    - if account.user_admin?
-      .roles
-        .account-role.admin
-          = t 'accounts.roles.admin'
-    - elsif account.user_moderator?
-      .roles
-        .account-role.moderator
-          = t 'accounts.roles.moderator'
+    - if Setting.show_staff_badge
+      - if account.user_admin?
+        .roles
+          .account-role.admin
+            = t 'accounts.roles.admin'
+      - elsif account.user_moderator?
+        .roles
+          .account-role.moderator
+            = t 'accounts.roles.moderator'
 
     .bio
       .account__header__content.p-note.emojify= Formatter.instance.simplified_format(account)

app/views/admin/settings/edit.html.haml

@@ -18,6 +18,9 @@
   .fields-group
     = f.input :timeline_preview, as: :boolean, wrapper: :with_label, label: t('admin.settings.timeline_preview.title'), hint: t('admin.settings.timeline_preview.desc_html')
 
+  .fields-group
+    = f.input :show_staff_badge, as: :boolean, wrapper: :with_label, label: t('admin.settings.show_staff_badge.title'), hint: t('admin.settings.show_staff_badge.desc_html')
+
   .fields-group
     = f.input :open_registrations, as: :boolean, wrapper: :with_label, label: t('admin.settings.registrations.open.title'), hint: t('admin.settings.registrations.open.desc_html')