CSVPersister includes commas in large values

[simonkelly1973]

The Data Recorder app in OpenICE has several different "persisters" that are actually responsible for storing the data. Use of the CSVPersister is very common. It formats numbers using a "NumberFormat" and obtains a NumberFormat using NumberFormat.getNumberInstance() . By default, this number format uses "grouping" to create numbers that are better human readable. For instance, one thousand is presented as

1,000

However, this is obviously a problem in a CSV file, as the additional , characters in the output are treated as separators in the resulting output.

[simonkelly1973]

Commit 124aace fixes the issue by turning grouping off. I also included a test.