Merge pull request #65 from pekrau/master

Added upload of samples into existing project.
removed extra link
Merge pull request #66 from Galithil/master

removed extra link
Added structural changes
several more schema modifications
typo
updating the schema according to the doc
Merge pull request #68 from Galithil/master

Data model changes
Merge pull request #65 from NationalGenomicsInfrastructure/master

update from Denis