docs/configuration: expand L10N_SETTINGS dictionary
docs/configuration: expand L10N_SETTINGS dictionary

Follow what we did for SATCHMO_SETTINGS.

Ryati/satchmo,dokterbob/satchmo,dokterbob/satchmo,ringemup/satchmo,ringemup/satchmo,twidi/satchmo,Ryati/satchmo,twidi/satchmo