Add Preferred languages to Application Registration Configuration

[spwitt]

Add preferredLanguages to ApplicationRegistrationConfiguration APIs. Update screenshot.

Site Issue:

• Add Documentation for user.preferredLanguages on Basic Registration Forms #1943

Related Issue:

• Localized email templates not being used during self-service registration fusionauth-issues#1738

[mooreds]

Can you please update this tutorial with a new screenshot? https://fusionauth.io/docs/v1/tech/guides/basic-registration-forms

Not sure if this should be documented here, but what does the preferred languages field look like? is it the same as the locale selector? How do I control what shows up there?

[spwitt]

@mooreds updated the guide screenshot.

The selection uses https://fusionauth.io/docs/v1/tech/reference/data-types#locales

There is no way to configure which locales appear in the list similar to the existing preferred languages dropdown.

[mooreds]

One small change requested.

[mooreds]

Is this ready to merge, @spwitt ?

[mooreds]

Or is this waiting for 1.45? Oops, looks like it is.

[mooreds]

Would be awesome if this made it into 1.47.

[mooreds]

@spwitt super exciting! This is great for folks who are on the community version and want to make sure their initial emails are sent out in the correct language.