Add a parent_id column to the trash can table
Rename DBOTrash to DBOTrashEntity
Rename DBOTrash to DBOTrashEntity
Add the TrashEntity DTO
Add a method to also reset self-benefactors when moving to the trash can
Add a manager for node tree query service
Add a manager for node tree query service
Rename TrashEntity to TrashedEntity
Move unit test to manager
Rename TrashEntity to TrashedEntity
Rename TrashEntity to TrashedEntity
Merge pull request #284 from eric-wu/trashcan

Trashcan supporting changes