Merge pull request #40 from smirfolio/master

Add Facet search block to search studies page
MICASERVER-66 Study acronym is provided by the variable dto
Merge pull request #41 from obiba/variable-study-acronym

MICASERVER-66 Study acronym is provided by the variable dto
MICASERVER-74 Dataset page reviewed (in progress)
MICASERVER-74 Dataset page reviewed
Merge pull request #42 from obiba/dataset-page-refactor

MICASERVER-74 Dataset page reviewed (in progress)