RESOLVED - issue OPENFLEXO-343: New WKF palette request 
https://bugs.openflexo.com/browse/OPENFLEXO-343
IMPORTANT: Updated opacity on many widgets and panels. Opacity should be
handled by the FIB "opaque" property. In some cases, in order for that
property to properly work, we force the opaque property of some
intermediary (artifact) components to false since the actual FIB
component will take care of it.