EDIT

ref #7823 implement user.person deduplication

ref #7799 deduplicate and parse authorteams

ref #7801 and ref #3787 deduplicate reference.authorstring and reference itself

include filtered authors in E+M import

#7799 reduce duplicated sources

improve performance for author loading in E+M

ref #7796 remove ILDIS Bibliographie NameFacts from E+M import

cleanup

ref #7799 improve performance of authorteam loading

ref #7799 and others reinstall null check