* [feature] document versioning #2469

* [minor] remove on_update from WebsiteGenerator

* [fix] delete shares when deleting user

* [test] don't run delete in background if test

* [fix] test_db

* [added] Deleted Document

* [fix] added track_changes in all documents

* [fix] add to deleted only if exists

* [fix] in_install flag in deleted documents

* [minor] name will always be reset