Code review comment for lp:~cimi/unity8/uitkPageHeader

There's still a focus bug.
 * make tryDash
 * Click on the magnifying glass
 * Click on the filters icon (the one left to Cancel)
 * Click anywhere outside the popup

With the new code the search bar regains the focus, with the old one it does not.

Could you also please add a test for this so next time we don't have to rely on manual testing?