Qt: Add titles to various message boxes

Source/Core/DolphinQt2/Main.cpp

@@ -187,6 +187,7 @@ int main(int argc, char* argv[])
 
       analytics_prompt.setIcon(QMessageBox::Question);
       analytics_prompt.setStandardButtons(QMessageBox::Yes | QMessageBox::No);
+      analytics_prompt.setWindowTitle(QObject::tr("Allow analytics"));
       analytics_prompt.setText(
           QObject::tr("Do you authorize Dolphin to report information to Dolphin's developers?"));
       analytics_prompt.setInformativeText(