Fixes #6285 - Settings API does not parse incoming values to correct data type

fixes #3272 - allow 'admin' account to be removed and replaced

Fixes #6308: Load plugin seeds from seeds.d directory of each plugin

Fixes #5689 - Plugin permissions are migrated too

fixes #5489 - don't generate empty search () filters on permissions migration

fixes #5540 - also clone builtin roles during migration

fixes #5427 - skip user roles FK removal if it's missing

fixes #5241 - Add support for external user groups.

Fixes #5391 - Authorizer test should use testing permission

Also change order of seed so admin user can be saved and
existing Anonymous role is assigned.

fixes #5200 - set config group counters to zero by default