Number of data points calculation broken

[ibressler]

Original report by Tim Snow (Bitbucket: timsnow864, GitHub: timsnow).

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Loading in a file with >1000 data points only registers as having 98; this is easy to correct manually but is a pain

[JeppeBreum]

I also have this issue. Although McSAS seems to load all data points, even if it says it doesn't.