Cleanup includes

Use new tools in Visual Studio to help cleaning up includes and remove redundant includes.

Fwk/AppFwk/cafCommand/cafCmdFieldChangeExec.cpp

@@ -38,6 +38,7 @@
 
 #include "cafNotificationCenter.h"
 #include "cafPdmReferenceHelper.h"
+#include "cafPdmUiOrdering.h"
 
 namespace caf
 {

Fwk/AppFwk/cafCommand/cafCmdUiCommandSystemImpl.cpp

@@ -43,8 +43,7 @@
 #include "cafPdmChildArrayField.h"
 #include "cafPdmFieldHandle.h"
 #include "cafPdmObjectHandle.h"
-#include "cafPdmUiObjectHandle.h"
-#include "cafPdmXmlFieldHandle.h"
+#include "cafPdmReferenceHelper.h"
 #include "cafSelectionManager.h"
 
 #include <QMenu>