add DICOM model
Merge branch 'master' of https://github.com/molgenis/molgenis
split off dicom tags from model, allow tags in emx import service.
Merge branch 'master' of https://github.com/molgenis/molgenis
Merge branch 'master' of https://github.com/molgenis/molgenis
DICOM Model.
Made names short enough.
Added identifiers to entities without.
Made multiple compound inclusions into xrefs
Merge branch 'master' of https://github.com/molgenis/molgenis
Forget the dicom tags.
Merge pull request #2063 from dennishendriksen/master

Improved rendering of compound attributes
Merge branch 'master' of https://github.com/molgenis/molgenis
DICOM: Added website and documentation links.
Revert non-DICOM importer change.
Merge pull request #2066 from fdlk/master

DICOM model
Remove System.out line.
Don't try to remove metadata if it has not yet been added.
Fixes #2048
Merge pull request #2068 from fdlk/fix/2048

Fix/2048
Fix high priority Findbugs warnings
Fix high priority Findbugs warning
Fix high priority Findbugs warning (missing hashCode), Fix bug in equals
Fix high priority Findbugs warning