implement is_locked for trip_details

src/tera/admin/planned_event.rs

@@ -47,6 +47,7 @@ struct UpdatePlannedEventForm<'r> {
     max_people: i32,
     notes: Option<&'r str>,
     always_show: bool,
+    is_locked: bool,
 }
 
 #[put("/planned-event", data = "<data>")]
@@ -64,6 +65,7 @@ async fn update(
                     data.max_people,
                     data.notes,
                     data.always_show,
+                    data.is_locked,
                 )
                 .await;
             Flash::success(Redirect::to("/"), "Successfully edited the event")