Round numbers in CSV exports

[somerandomsequence]

We can reduce the size of CSV export files by rounding windspeeds to two 2 digits of precision (round(x,2)) with no loss of meaning:

2.4138854593073327

becomes

2.41

[RLiNREL]

@sameersk2k could you verify if it is already done and close it if completed? Thanks

[sameersk2k]

@RLiNREL this was done. Forgot to mark as completed.