Update the database in a different thread so it doesn't freeze the main

thread.
Show PIN in a dialog instead of a notification popup.
Translations updated.

cmabroadcast.h

@@ -40,6 +40,7 @@ private:
     QByteArray reply;
     QString hostname;
     QUdpSocket *socket;
+
     static const QString broadcast_reply;
     static const char *broadcast_query;
     static const char *broadcast_ok;