Relation species of monkey use twinable_bleong_to and is invariant
Make thumbnail twinnable
"Bugfix on migration classes"
Merge branch 'dev' into feature/wysiwyg_media_twinnable
Merge branch 'feature/relation_common_id' into feature/wysiwyg_media_twinnable
Merge relation_common_id and thumbnail twinnable
Merge branch 'dev' into feature/wysiwyg_media_twinnable