curl timeout, reorder layers, handle right click osx

engine/app.cpp

@@ -367,6 +367,10 @@ void App::initLayout()
         layers->on_layer_change = [this](Node*, int old_idx, int new_idx) {
             canvas->m_canvas->m_current_layer_idx = new_idx;
         };
+        
+        layers->on_layer_order = [this](Node*, int old_idx, int new_idx) {
+            canvas->m_canvas->layer_order(old_idx, new_idx);
+        };
 
         layers->on_layer_opacity_changed = [this](Node*, int idx, float value) {
             canvas->m_canvas->m_layers[idx].m_opacity = value;