logic: source groups for project settings

* project can not have multiple source groups with different types
* language of a project is now inferred from source groups
* setting global NameHierarchy delimiter of first sourceGroup in project
* added project settings migrations for source groups
* Add Settings Migration classes (MoveKey, DeleteKey, Lambda)
* Update sample projects with migrations
* added method to config to retrieve sublevel key names
* implemented recursive removing of keys in settings
* moved project files out of top level
* removed solution parsing code as it is not used anymore

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src/lib/data/TaskShowStatusDialog.h

@@ -13,8 +13,7 @@ class TaskShowStatusDialog
 public:
 	TaskShowStatusDialog(
 		const std::string& title,
-		const std::string& message,
-		std::shared_ptr<DialogView> dialogView
+		const std::string& message
 	);
 
 	virtual ~TaskShowStatusDialog();
@@ -27,7 +26,6 @@ private:
 
 	const std::string m_title;
 	const std::string m_message;
-	std::shared_ptr<DialogView> m_dialogView;
 };
 
 #endif // TASK_SHOW_STATUS_DIALOG_H