Locale provider

[h3llr4iser]

I want to get locales from database but I have only found to gets the locales from configuration:

    default_locale: %locale%
    locales: %locales%
    strategy: prefix

Is there any way to get the locales from a service like that:

    locale_provider: id_service_locale_provider
    strategy: prefix

[jdemangeon]

Good idea, this would also reduce duplication of code.