A repeater saved with non-sequential keys was read only at keys 0 to
len-1, so a model at a higher key was dropped while the import reported
success and refused to run again. Every key is now read, numeric keys in
ascending order.
- TestGolemAdminSchemas: no key column in the list, a password api_key
field, the access_settings permission, a model that never serializes
its key, the admin hooks' refusals
- TestGolemImportCommand: missing app or database, the notice path, a
numbered repeater with PHP's scalar forms, a refused second run and
malformed or missing files
