graphics table properties editor : minor

Add label to inform users that the number of row is less than the number
of information to display.

sources/qetgraphicsitem/ViewItem/ui/graphicstablepropertieseditor.h

@@ -52,6 +52,7 @@ class GraphicsTablePropertiesEditor : public PropertiesEditorWidget
 		void on_m_header_font_pb_clicked();
 		void on_m_table_font_pb_clicked();
 		virtual void updateUi() override;
+		void updateInfoLabel();
 		void on_m_table_name_le_textEdited(const QString &arg1);
 		void on_m_previous_table_cb_activated(int index);
 		void on_m_previous_pb_clicked();