Replace some #include, by pre declaration

git-svn-id: svn+ssh://svn.tuxfamily.org/svnroot/qet/qet/trunk@3316 bfdf4180-ca20-0410-9c96-a3a8aa849046

sources/ui/masterpropertieswidget.cpp

@@ -21,6 +21,8 @@
 #include <diagramposition.h>
 #include <elementprovider.h>
 #include <diagramcommands.h>
+#include <diagram.h>
+#include <element.h>
 
 /**
  * @brief MasterPropertiesWidget::MasterPropertiesWidget

sources/ui/masterpropertieswidget.h

@@ -19,9 +19,10 @@
 #define MASTERPROPERTIESWIDGET_H
 
 #include <QWidget>
-#include "element.h"
+#include <QHash>
 
 class QListWidgetItem;
+class Element;
 
 namespace Ui {
 	class MasterPropertiesWidget;