FIX: Allow uppercase letters in automatic group names

FIX: Allow uppercase letters in automatic group names

User.username_exists? always converts to lowercase during lookup, so this change should be safe.

diff --git a/app/models/group.rb b/app/models/group.rb
index 8a6d718..4832b9a 100644
--- a/app/models/group.rb
+++ b/app/models/group.rb
@@ -437,7 +437,7 @@ class Group < ActiveRecord::Base
     end
 
     # don't allow shoddy localization to break this
-    localized_name = User.normalize_username(I18n.t("groups.default_names.#{name}", locale: SiteSetting.default_locale))
+    localized_name = I18n.t("groups.default_names.#{name}", locale: SiteSetting.default_locale)
     validator = UsernameValidator.new(localized_name)
 
     if validator.valid_format? && !User.username_exists?(localized_name)

GitHub sha: 6805cc287ef4700d3223fe9172632fd8f58c5c2f

This commit appears in #13723 which was approved by eviltrout. It was merged by gschlager.