add interest class on the register interest button to enable the jquery action association
Merge branch 'master' of https://github.com/mpi2/PhenotypeArchive

# By ckchen-ebi (1) and mrelac (1)
# Via mrelac
* 'master' of https://github.com/mpi2/PhenotypeArchive:
  This change completes search download testing for: anatomy, disease, gene, phenotype, and procedure.
  now using FileDataSource preQc indexing