Made sure the render settings are updated correctly on user input.

client/main_window.cpp

@@ -256,6 +256,8 @@ void main_window::handle_update_settings()
     render_settings.img_height = field_list[5]->text().toULong();
     render_settings.iterations = field_list[6]->text().toULong();
 
+    new_render_settings = render_settings;
+
     delete mandel_image;
 
     scene->setSceneRect(0, 0, render_settings.img_width, render_settings.img_height);