Add service details config, use for known services

app/helpers/services_helper.rb

@@ -0,0 +1,12 @@
+module ServicesHelper
+
+  def service_human_name(key, category = :external)
+    SERVICES[category][key][:name] || key.to_s
+  end
+
+  def service_display_name(key, category = :external)
+    SERVICES[category][key][:display_name] ||
+    service_human_name(key, category)
+  end
+
+end

app/models/setting.rb

@@ -22,10 +22,7 @@ class Setting < RailsSettings::Base
   include Settings::XmppSettings
 
   def self.available_services
-    known_services = %w[
-      discourse ejabberd email gitea mastodon mediawiki remotestorage
-    ]
-
+    known_services = SERVICES[:external].keys
     known_services.select {|s| Setting.send "#{s}_enabled?" }
   end