Refactor ScheReg schema sync
check what needs to be done in what circumstances ->mongo, index, filesystem
(from redmine: issue id 602, created on 2018-01-22tgradl, closed on 2018-01-24)
check what needs to be done in what circumstances ->mongo, index, filesystem
(from redmine: issue id 602, created on 2018-01-22tgradl, closed on 2018-01-24)