Remove derelict code
Removed old entity and some unused classes
Remove QueryJoinRule
Move code back to molgenis-data
Merge branch 'master' of https://github.com/molgenis/molgenis

Conflicts:
	molgenis-data-csv/pom.xml
	molgenis-data-excel/pom.xml
	molgenis-data-jpa/pom.xml
Fix test
Version nr
Version nr
Merge pull request #964 from erwinwinder/master

Removed unused code and moved data code back to molgenis-data