CDS-549 Added "Case-based Learning" as an allowed label for "caser" in npjpcrm
CDS-567 subjects for npjbcancer
Schematron changes

1. Changed definition of npjpcrm so that missing volume and elocation id
will be reported
2. Suppressed tests on page number formats for PCRJ archive articles
3. Report techniques included in subject terms list
Tagging Instructions change

Updated subject codes to also include instructions for NPG techniques.
Merge pull request #25 from nature/CDS-549

Cds 549