I suspect lupdate isn't smart enough to figure out what tr() is suppose
to do, so just make it a static function in class.
The error was: tr() cannot be called without context
qDebug(), qInfo(), qWarning(), qCritical(), qFatal() expect %s arguments
to be UTF-8 encoded, while qPrintable() converts to local 8-bit encoding.
Therefore qUtf8Printable() should be used for logging strings instead of
qPrintable().
Rename from uncompress to decompress
Change signature
Use proper casting
Use larger buffer for the output of inflate()
Reserve 1 MBytes for output buffer
Change function signature
