adds more user class support

app/models/wiki_page.rb

@@ -4,6 +4,7 @@ class WikiPage < ActiveRecord::Base
   before_validation :initialize_updater
   after_save :create_version
   belongs_to :creator, :class_name => "User"
+  belongs_to :updater, :class_name => "User"
   validates_uniqueness_of :title, :case_sensitive => false
   validates_presence_of :title
   validate :validate_locker_is_janitor