Fixes #19787 - Fix Layout/SpaceAfterComma cop

Fixes #23081 - Fix Style/SafeNavigation cop

Fixes #19039 - Lock plugin roles

fixes #19317, #10927 - move registries to autoload_once path

Partially reverts 70ce8fe to reinstate autoload_once_paths as the
preferred way to load registry-type objects with class variables
containing data set up during app initialisation (e.g. plugin
registrations, menu items.)...

Refs #18001 - Avoid role extending from rake tasks permission

Fixes #18001 - Add plugin permissions to core's roles

Refs #3809 - Turning on some rubocop cops

Fixes #10487: Add custom logging support

This change moves away from the Rails logger to the 'logging' gem
to support more configurability of logging. Further, this allows for
the creation of custom loggers that plugins can then create during
registration (with `logger`) or through settings....