data: Fixed indexing performance regression in FileRegister

* removed debug cout uses
* add source paths first as header search paths

src/lib_gui/qt/view/QtDialogView.cpp

@@ -174,7 +174,6 @@ void QtDialogView::startIndexingDialog(
 			connect(window, &QtWindow::canceled,
 				[=]()
 				{
-					std::cout << "cancelse" << std::endl;
 					setUIBlocked(false);
 				}
 			);

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

@@ -74,7 +74,6 @@ bool QtProjectWizzardContentPaths::check()
 	for (const FilePath& path : m_list->getList())
 	{
 		std::vector<FilePath> expandedPaths(1, path);
-		std::cout << path.str() << std::endl;
 		if (m_settings)
 		{
 			expandedPaths = m_settings->makePathsExpandedAndAbsolute(expandedPaths);