style: complete housekeeping improvements - online users widget, sidebar cleanup

src/app/admin/layout.tsx

@@ -70,9 +70,9 @@ const NAV_GROUPS: { label: string; items: { href: string; label: string }[] }[]
       { href: "/admin/maintenance", label: "Maintenance" },
       { href: "/admin/housekeeping", label: "Housekeeping" },
       { href: "/admin/rooms", label: "Rooms" },
-      { href: "/admin/email-templates", label: "Email" },
-          { href: "/admin/theme", label: "Theme" },
-          { href: "/admin/media", label: "Media" },
+      { href: "/admin/email-templates", label: "Email templates" },
+      { href: "/admin/theme", label: "Theme" },
+      { href: "/admin/media", label: "Media" },
       { href: "/admin/settings", label: "Settings" },
     ],
   },