ui: removed 'Save Project' and 'Save Project As' actions

* removed save actions from menu in QtMainWindow
* removed MessageSaveProject and all Listeners
* updated project loading to ask whether old project and db file should be kept at old location
* fixed crash for missing include files
* fixed simple header search within source paths was broken

src/lib_gui/qt/window/project_wizzard/QtProjectWizzard.cpp

@@ -555,8 +555,7 @@ void QtProjectWizzard::showSummary()
 
 void QtProjectWizzard::createProject()
 {
-	std::string path = m_settings.getProjectFileLocation().str() + "/" + m_settings.getProjectName() + ".coatiproject";
-
+	FilePath path(m_settings.getProjectFileLocation().str() + "/" + m_settings.getProjectName() + ".coatiproject");
 	m_settings.save(path);
 
 	bool edited = false;