Add seperate actions for adding and removing connection groups.

pglab/ConnectionController.h

@@ -34,6 +34,8 @@ public:
 	/// Starts the form for editing a conncetion.
 	/// This function returns immidiatly!
 	void editConnection(QModelIndex index);
+	void addGroup();
+	void removeGroup(QModelIndex index);
 private:
 	MasterController *m_masterController;
 	ConnectionList *m_connectionList = nullptr;