Work on plugin mechanism

Context actions have become normal actions in the pluginwidget so the widget knows abot them and
can easily do things like enable/disable.

pglab/CrudTab.h

@@ -33,7 +33,11 @@ private:
 	std::optional<PgClass> m_table;
 
 	CrudModel *m_crudModel = nullptr;
-	std::vector<QAction*> actions;
+	QAction *m_refreshAction = nullptr;
+
+	void initActions();
+
+	virtual QList<QAction *> actions() override;
 
 private slots:
 	void on_actionRemove_rows_triggered();
@@ -49,6 +53,7 @@ public:
 private slots:
 
 private:
+
 	void moduleAction_open(IPluginContentWidgetContext* context, const ModuleActionParameters &params);
 };