FIX: improvements for the admin sidebar (#26168)

- add all settings link
- hide the customize header menu when the admin sidebar

app/assets/javascripts/admin/addon/templates/customize.hbs

@@ -1,3 +1,4 @@
+{{#unless this.currentUser.use_admin_sidebar}}
   <AdminNav>
     {{#if this.currentUser.admin}}
       <NavItem
@@ -59,6 +60,7 @@
       class="admin-customize-watched-words"
     />
   </AdminNav>
+{{/unless}}
 
 <div class="admin-container">
   {{outlet}}

app/assets/javascripts/discourse/app/lib/sidebar/admin-nav-map.js

@@ -378,6 +378,12 @@ export const ADMIN_NAV_MAP = [
         label: "admin.advanced.sidebar_link.experimental",
         icon: "discourse-sparkles",
       },
+      {
+        name: "admin_all_site_settings",
+        route: "adminSiteSettings",
+        label: "admin.advanced.sidebar_link.all_site_settings",
+        icon: "cog",
+      },
     ],
   },
 ];

config/locales/client.en.yml

@@ -5328,6 +5328,7 @@ en:
           other_options: "Other"
           search: "Search"
           experimental: "Experimental"
+          all_site_settings: "All Site Settings"
 
       navigation_menu:
         sidebar: "Sidebar"