Cache metadata pojo's.
Fetch entities from package.
Fix tests
organize imports
temporary fix for packages to map, TODO: use code in PackageRepository instead
getEntities() -> getEntityMetaDatas()
Merge branch 'fix/meta' of https://github.com/fdlk/molgenis into feature/ontology
Merge pull request #2015 from fdlk/fix/meta

Fix/meta
Add newly created PackageImpl to parent's subpackages.
... only if the parent is not null.
Add TagRepository plus test.
Tag AttributeMetaData.
Create OntologyTagService, leave MetaDataServiceImpl alone for now.
Fix for issue #2016
Merge pull request #2020 from erwinwinder/master

Fix for issue #2016
Fix import
Merge pull request #2019 from fdlk/master

Add newly created PackageImpl to parent's subpackages.
Merge branch 'master' of https://github.com/molgenis/molgenis
Merge branch 'master' of https://github.com/molgenis/molgenis into feature/ontology

Conflicts:
	molgenis-data/src/main/java/org/molgenis/data/meta/AttributeMetaDataMetaData.java
Merge branch 'master' of https://github.com/molgenis/molgenis into
feature/ontology

Conflicts:
	molgenis-data/src/main/java/org/molgenis/data/meta/AttributeMetaDataMetaData.java
full_name
Move TagRepository to semantic package. Initialize tags repository in the MetaDataService.