i18n - fix some broken subcommand description extractions
Merge pull request #144 from domcleal/i18n-extractions

i18n - fix some broken subcommand description extractions
Fixes #6761 - lazy loaded subcommands
Merge pull request #139 from tstrachota/lazy_loading

Fixes #6761 - lazy loaded subcommands
Fixes #6879 - External user groups CLI