separated ontology related class from molgenis-ontology and created a new module molgenis-ontology-core for them, therefore it solves the cyclic reference problem
Remove doc generators (see model registry docs)
Fix pom error
Remove doc generators (see model registry docs)
Remove doc generators (see model registry docs)
Merge pull request #2191 from dennishendriksen/master

Remove doc generators (see model registry docs) + fix pom error
removed all the irrelvant tests (because those tests belong to module molgenis-ontology-core)
cleaned up the code
added delete matching task in UI as well as in back end
Merge branch 'master' of https://github.com/molgenis/molgenis into feature/sorta