Revert "Merge branch 'XMLPropertiesNew'"

**Break a lot of thing.**

This reverts commit 1db1800572, reversing
changes made to 4c563821e8.

sources/editor/elementitemeditor.h

@@ -55,16 +55,8 @@ class ElementItemEditor : public QWidget
 
 		virtual CustomElementPart *currentPart() const = 0;
 		virtual QList<CustomElementPart*> currentParts() const = 0;
-        /*!
-         * \brief updateForm
-         * update the values of the widget
-         */
-        virtual void updateForm();
-    private:
-        virtual void updateFormPriv() = 0;
+		virtual void updateForm() = 0;
 	
-protected:
-        QList<QMetaObject::Connection> m_change_connections;
 		// attributes
 	private:
 		QETElementEditor *element_editor;