Implement support for INCA data files that are in CSV format

[Nicklas Nordborg]

The current converter implementation only works with INCA source data in XML format. The XML format is being replace with a CSV format, so the converter need to support CSV source files as well. From the test data we have got it seems like the CSV files are formatted as:

• Comma is used as a separator
• Text values are quoted.
• Date values can be both quoted and unquoted.
• Numeric vales can be both quoted and unquoted (but some may be id-values)
• NA is used instead of empty values (without quotes)
• The column header is empty but the values seem to be the PAT_ID values.

[Nicklas Nordborg]

In 7497:

References #1555: Implement support for INCA data files that are in CSV format

A new parser IncaCsvParser has been implemented. The converter will automatically select this or the XML parser depending on the file extension.

The implementation now also generates a log file which can be used to report problems. It will help with debugging in the future.

[Nicklas Nordborg]

In 7498:

References #1555: Implement support for INCA data files that are in CSV format

NA values are replaced with empty strings.

[Nicklas Nordborg]

In 7499:

References #1555: Implement support for INCA data files that are in CSV format

The SCAN-B file header is PersonalNr not PersonalNo.