Argument type mismatch in log messages about loaded VATSIM server file

[ltoenning]

The log function for the server file expects the argument as number of lines:

pilotclient/src/blackcore/webdataservices.cpp

Lines 1350 to 1353 in 7e6f3f0

	void CWebDataServices::vatsimServerFileRead(int lines)
	{
	CLogMessage(this).info(u"Read VATSIM server file, %1 lines") << lines;
	}

but the argument of the signal triggering this slot is kilobytes:

pilotclient/src/blackcore/vatsim/vatsimserverfilereader.h

Lines 53 to 55 in 7e6f3f0

	signals:
	//! Data have been read
	void dataFileRead(int kB);

As the input file is in JSON format, the number of lines also doesn't really make sense here.
Further, as the server file is pretty small and the conversion to kilobytes is handled as an integer division, the result is always 0.
Maybe the argument should be passed as double/float instead.