AutoNum: a lot of changes

Schemas now get saved with a UUID and do not have to be looked up according to the form. They can be renamed and it gets reflected in existing elements. The GUI for
editing them is now much easier, e.g. forms can be reshuffled. A formula can be applied. Many options now also for conductors and sheets.

sources/autoNum/ui/autonumberingdockwidget.h

@@ -22,9 +22,11 @@
 #include "../../qetproject.h"
 
 #include <QDockWidget>
+#include <QPointer>
 
 class QComboBox;
 class QLineEdit;
+class QPushButton;
 class QSpinBox;
 
 namespace Ui {
@@ -58,6 +60,9 @@ class AutoNumberingDockWidget : public QDockWidget
 		void refreshValueFields();
 
 		void on_m_configure_pb_clicked();
+		void applyElementSchemeToSelection();
+		void updateApplyEnabled();
+		void followSelectionOf(DiagramView *view);
 
 		void on_m_conductor_reset_start_pb_clicked();
 		void on_m_element_reset_start_pb_clicked();
@@ -126,6 +131,8 @@ class AutoNumberingDockWidget : public QDockWidget
 			/// this replaces refreshValueField() at each of them.
 		void refreshRow(AutoNumCategory category);
 
+		QPushButton *m_element_apply_pb = nullptr;
+		QPointer<Diagram> m_selection_diagram;   ///< the folio whose selection enables the apply button
 		Ui::AutoNumberingDockWidget *ui;
 		QETProject* m_project = nullptr;
 		ProjectView* m_project_view = nullptr;