Use easeOutQuad curve when bringing windows into view

If an animation needs to wait for a window covering it to move it should start
out fast.

tiling.js

@@ -432,7 +432,7 @@ function ensure_viewport(space, meta_window, force) {
     if (meta_window.get_compositor_private().is_scaled()) {
         // easeInQuad: delta/2(t/duration)^2 + start
         delay = Math.pow(2*(stack_margin - minimumMargin)/frame.width, .5)*0.25/2;
-        transition = 'easeInOutQuad';
+        transition = 'easeOutQuad';
         debug('delay', delay)
     }
     space.moving = meta_window;