Validation of study tags should be case-sensitive

[ljwh2]

Metadata template upload currently allows case-insensitive entry of study tags, i.e. study tags can be entered with different cases in study tab and sample tab. This causes downstream problems (e.g. goci#744, goci #753) as other parts of the submission/curation workflow that handle study tags are case-sensitive.

Metadata template validation should be updated to ensure study tags cannot be entered in different cases.

[ljwh2]

@jdhayhurst assigning this to you to incorporate in the new template validation

[jdhayhurst]

This is not some defined by the template service (Python): https://github.com/EBISPOT/gwas-template-services. It is something that the validator (Java) does: https://github.com/EBISPOT/gwasdepo-template-validator. It therefore needs a Java developer - @sprintell please can you reassign?