Event handling fixes for Universal search and VKB

In OverlayWindowManager, ignore touch events if VKB is open.

In CardWindowManager, ignore tap events if Universal search is visible.

Fixes GF-1788.

Open-webOS-DCO-1.0-Signed-off-by: Jaakko Putaala <jaakko.putaala@palm.com>

Change-Id: I13d7fe8863142d1961c0e88c1eab57b56714f583
Reviewed-on: https://g2g.palm.com/1707
Reviewed-by: Build Verification
Reviewed-by: Jaakko Putaala <jaakko.putaala@palm.com>
Tested-by: Jaakko Putaala <jaakko.putaala@palm.com>
Reviewed-by: Teppo Pennanen <teppo.pennanen@palm.com>
Reviewed-by: Kimmo Leppala <kimmo.leppala@palm.com>
Reviewed-by: Roger Stringer <roger.stringer@lge.com>