add only meta data test dataset

change interface of the entityMetaData to have all functionality of
defaultEntityMetaData

packages without parent or entity can be added to the packages table
Merge branch 'master' of github.com:molgenis/molgenis
Changes made after feedback
added some quotes around the getTableName method in the MysqlRepository
Merge branch 'master' of github.com:molgenis/molgenis
added changes after feedback
Add MAGE-TABv1.0 model
Merge pull request #2039 from Mark-de-Haan/master

Added SAM model
refactor
Remove
remove JUnit
Merge pull request #2035 from jjettenn/master

a loose package can be added to the packages table
Fix search box in the model registry
Merge branch 'master' of github.com:jjettenn/molgenis
Merge pull request #2040 from jjettenn/master

Fix search box in the model registry
Added emx file for ISA-TAB
Merge branch 'master' of github.com:molgenis/molgenis