logic: Ask user before reparsing the project

While the message box with the question is visible the ui is blocked. A message appears when:
* when project was edited
* when preferences were edited
* when project file has more recent changes than db
* when db has a different version than Coati

src/lib/Application.h

@@ -33,6 +33,7 @@ public:
 
 	~Application();
 
+	void createAndLoadProject(const FilePath& projectSettingsFilePath);
 	void loadProject(const FilePath& projectSettingsFilePath);
 	void refreshProject();
 	void saveProject(const FilePath& projectSettingsFilePath);