move everything out of layout

src/bin/test/main.rs

@@ -8,7 +8,7 @@ fn main() {
 }
 
 pub struct Client {
-    info: WidgetId<Text>,
+    info: WidgetHandle<Text>,
 }
 
 event_ctx!(Client);
@@ -143,7 +143,7 @@ impl DefaultAppState for Client {
 
         let main = pad_test.clone().pad(10).add(ui);
 
-        let switch_button = |color, to: WidgetId, label| {
+        let switch_button = |color, to: WidgetHandle, label| {
             let main_ = main.clone();
             let rect = rect(color)
                 .on(CursorSense::click(), move |ctx| {