Merge pull request #29 from ChaoPang/master

Stored LabelAttribute only for the MREF fields instead of everything
Change dataset label Palga
Merge branch 'master' of https://github.com/molgenis/molgenis-palga
Merge pull request #30 from jjettenn/master

Change label Palga Sample
fixed the retrieval term bugs
Merge branch 'master' of https://github.com/molgenis/molgenis-palga