ConnectionManager overhaul

- connection settings are now changed by seperate component currently called in a seperate window
- old settings pane on the right of the connections had been removed
- new edit config button added between new connection and remove connection

pglab/ConnectionManagerWindow.h

@@ -11,7 +11,6 @@ class ConnectionManagerWindow;
 class ConnectionConfig;
 class ConnectionController;
 class MasterController;
-class QDataWidgetMapper;
 class QStandardItemModel;
 
 /** \brief Class that holds glue code for the ConnectionManager UI.
@@ -25,7 +24,6 @@ public:
 
 private slots:
 	void on_actionAdd_Connection_triggered();
-	void on_currentChanged(const QModelIndex &current, const QModelIndex &previous);
 	void on_actionDelete_connection_triggered();
 	void on_actionConnect_triggered();
 	void on_actionQuit_application_triggered();
@@ -34,15 +32,12 @@ private slots:
 
 	void on_listView_activated(const QModelIndex &index);
 
+	void on_actionConfigure_connection_triggered();
+
 private:
 	Ui::ConnectionManagerWindow *ui;
-	QDataWidgetMapper *m_mapper = nullptr;
 	MasterController *m_masterController;
 	ConnectionController *m_connectionController;
-
-	std::optional<size_t> prevSelection;
-
-	void setupWidgetMappings();
 };
 
 #endif // CONNECTIONMANAGERWINDOW_H