Fixed data base info retrieving through DBHelper, value(QString) should never be used because it is really slow. All items sorting should be done at db level or using std::sort.

common/exit_check.cpp

@@ -0,0 +1,21 @@
+#include "exit_check.h"
+
+#include "yacreader_global.h"
+
+#include <QMessageBox>
+
+using namespace YACReader;
+
+void YACReader::exitCheck(int ret)
+{
+	switch(ret)
+	{
+	case YACReader::SevenZNotFound:
+		QMessageBox::critical(0,QObject::tr("7z lib not found"),QObject::tr("unable to load 7z lib from ./utils"));
+		break;
+	default:
+		break;
+	}
+
+}
+