The application doesn't eem... seem to work. It doesn't even compile out of the box. Did you test it? If I choose anything from the menu, all texts are removed.
Edit: Ok, I managed to get it to work (I mean display text), but I don't see any bold text you mentioned.
Edit2: Oh, and you really waste a lot of effort... You are translating everything manually and then install the translator which make the application translate itself on its own. So there is a high chance your translations are simply overwritten by the onces Qt does. I suggest you read the chapter about i18n again...
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