added cached columns for post update count, post upload count, note update count, favorite count to users; fixed tests

app/models/note.rb

@@ -58,6 +58,8 @@ class Note < ActiveRecord::Base
   end
   
   def create_version
+    CurrentUser.increment!(:note_update_count)
+    
     versions.create(
       :updater_id => updater_id,
       :updater_ip_addr => updater_ip_addr,

app/models/post.rb

@@ -995,6 +995,8 @@ class Post < ActiveRecord::Base
   
   module VersionMethods
     def create_version
+      CurrentUser.increment!(:post_update_count)
+      
       if created_at == updated_at
         versions.create(
           :rating => rating,

app/models/upload.rb

@@ -69,6 +69,7 @@ class Upload < ActiveRecord::Base
         post = convert_to_post
         post.distribute_files
         if post.save
+          CurrentUser.increment!(:post_upload_count)
           update_attributes(:status => "completed", :post_id => post.id)
         else
           update_attribute(:status, "error: " + post.errors.full_messages.join(", "))

app/models/user.rb

@@ -182,12 +182,14 @@ class User < ActiveRecord::Base
     def add_favorite!(post)
       return if Favorite.exists?(:user_id => id, :post_id => post.id)
       Favorite.create(:user_id => id, :post_id => post.id)
+      increment!(:favorite_count)
       post.add_favorite!(self)
     end
     
     def remove_favorite!(post)
       return unless Favorite.exists?(:user_id => id, :post_id => post.id)
       Favorite.destroy_all(:user_id => id, :post_id => post.id)
+      decrement!(:favorite_count)
       post.remove_favorite!(self)
     end
   end