Fix MysqlRepositoryCollection security leaks
Fix date/datetime attributes in forms
Added test
Add foreign keys of all subclasses of XrefField
Merge branch 'master' of https://github.com/molgenis/molgenis
Merge branch 'master' of https://github.com/molgenis/molgenis
Fix validation
Merge pull request #1754 from erwinwinder/master

Fix MysqlRepositoryCollection security leaks