Substitute scratch windows with clones

This is necessary for events to pass through to the space.

grab.js

@@ -93,6 +93,7 @@ var MoveGrab = class MoveGrab {
         space.startAnimate();
         // Make sure the window actor is visible
         Tiling.animateWindow(metaWindow);
+        Navigator.getNavigator();
         Tweener.removeTweens(space.cloneContainer);
     }
 

navigator.js

@@ -211,6 +211,7 @@ var Navigator = class Navigator {
 
         TopBar.fixTopBar();
 
+        Scratch.animateWindows();
         this.space.startAnimate();
     }
 
@@ -320,6 +321,9 @@ var Navigator = class Navigator {
             }
         }
 
+        if (!Tiling.inGrab)
+            Scratch.showWindows();
+
         TopBar.fixTopBar();
 
         Main.wm._blockAnimations = this._block;