Add new types of ClinicalVariables
Merge branch 'master' into clinical_res_use_vars

Conflicts:
	transmart-core-db-tests/src/groovy/org/transmartproject/db/ontology/ConceptTestData.groovy
ClinicalDataTabularResult: making sure the empty row indices are exactly the same as a normal row
Added some comments to ClinicalVariableFactory. ConceptTestData was properly merged so highdim tests still work
ComposedVariablesCreationTests: adding test for numerical concept
Merge pull request #42 from thehyve/clinical_res_use_vars

Clinical res use vars