Update Iindex TOML config file #587
Description
Relates to: torrust/torrust-index#670
These two config option in the Index TOML config file have been removed:
[auth]
email_on_signup = "optional"
[mail]
email_verification_enabled = falseWe need to replace them with:
[registration]
[registration.email]
#required = false
#verified = false