This change converts the allow_uploaded_avatars site setting to uploaded_avatars_allowed_groups.
See: https://meta.discourse.org/t/283408
Hides the old setting
Adds the new site setting
Adds a deprecation warning
Updates to use the new setting
Adds a migration to fill in the new setting if the old setting was changed
Adds an entry to the site_setting.keywords section
Updates tests to account for the new change
After a couple of months, we will remove the allow_uploaded_avatars setting entirely.
Internal ref: /t/117248
1017820012