QmlDesigner.PropertyEditor: Extend ColorEditor for gradient name

Change-Id: If31e3f313864890d766c6aeaeb0c05687d773a2a
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@digia.com>
WinRT: Enable debugging for local packages.

Change-Id: Ic04f1a471f951caf7a79c69cceecb0ebd5d09919
Reviewed-by: hjk <hjk121@nokiamail.com>