hg: openjfx/8/controls/rt: RT-31168: reset CssFlag to clean so css will be reapplied if the node is added back later.

[hang.vo at oracle.com]

Changeset: 62e08c34a629
Author:    David Grieve<david.grieve at oracle.com>
Date:      2013-09-30 14:52 -0400
URL:       http://hg.openjdk.java.net/openjfx/8/controls/rt/rev/62e08c34a629

RT-31168: reset CssFlag to clean so css will be reapplied if the node is added back later.

+ modules/controls/src/test/java/javafx/scene/control/MiscellaneousTests.java
! modules/graphics/src/main/java/javafx/scene/Node.java