Display supervoter pref in API and CSS (#2641)

app/helpers/application_helper.rb

@@ -94,6 +94,7 @@ module ApplicationHelper
     user_class = user.level_class
     user_class = user_class + " user-post-approver" if user.can_approve_posts?
     user_class = user_class + " user-post-uploader" if user.can_upload_free?
+    user_class = user_class + " user-super-voter" if user.is_super_voter?
     user_class = user_class + " with-style" if CurrentUser.user.style_usernames?
     if options[:raw_name]
       name = user.name

app/models/user.rb

@@ -616,7 +616,7 @@ class User < ActiveRecord::Base
     end
 
     def method_attributes
-      list = [:is_banned, :can_approve_posts, :can_upload_free, :level_string]
+      list = [:is_banned, :can_approve_posts, :can_upload_free, :is_super_voter, :level_string]
       if id == CurrentUser.user.id
         list += [:remaining_api_hourly_limit]
       end