(Gestures) Ensure an update is done if gesture properties are updated.

(Gestures) Ensure an update is done if gesture properties are updated.

[Problem]  If gesture properties are updated and if there are no queued messaged from the event
           thread, then update is still not run.
[Cause]    Gesture properties are updated directly rather than via a message.
[Solution] Process gestures whenever we have an update, if the properties are updated, then we
           should update the scene as well.

Change-Id: Ief1ee545fb7a3af289623cf100fe24e18f296569
Signed-off-by: David Steele <david.steele@partner.samsung.com>