Create a tsv file with raw data for methylation items

[Nicklas Nordborg]

For Methylation items we currently store the IDAT files and two files with beta-values (normalized and adjusted). It would be useful to also have a tsv file with raw data. Eg. a file with four columns: ID, Meth, Unmeth and DetectionP for the CpG probes.

We should add this to the regular pipeline. Already existing items need to be processed manually and then we can use batch importers to register files and link with the methylation items.

The release exporter should include the new files.

[Nicklas Nordborg]

In 7849:

References #1612: Create a tsv file with raw data for methylation items

The R script is updated to also save the raw Meth, Unmeth and DetectionP values.

The analysis can be run on existing Methylation items. Existing files are not overwritten.

[Nicklas Nordborg]

In 7850:

References #1612: Create a tsv file with raw data for methylation items

The release exporter has been updated to include the new file. The software annotation is converted to a project-specific annotation since it will change it value when running the analysis.