* Keep commits of deleted users to other streams, but set the user reference to null
* fix(server): user deletion fixes; updates tests
includes one failing assert that needs to be fixed
* fix(server): left join on users in commit services to handle null author cases
* fix(server): ditto, caught one more join -> leftJoin case
* test(server): user deletion test wrap-ip
catches all commit/branches with null authors re services
* fix(server): unqualified delete syntax error - thanks JS!
Co-authored-by: Dimitrie Stefanescu <didimitrie@gmail.com>
luz paz