only show instance config link for permitted users, make nav markup

component async

src/web/pages/persons/profile.rs

@@ -51,7 +51,7 @@ pub async fn page(
     Ok(base(
         &title,
         html!(
-            (nav(Some(&u), req.uri().path()))
+            (nav(&mut conn, Some(&u), req.uri().path()).await)
 
             div class="mx-auto max-w-4xl px-2 my-4" {
                 @if let Ok(p) = p {