Move all order logic to models

- Have a default order for each model
-- The overall default is ID DESC
- Allow for custom orderings
-- When comma-separated IDs are used

app/controllers/notes_controller.rb

@@ -6,7 +6,7 @@ class NotesController < ApplicationController
   end
 
   def index
-    @notes = Note.search(params[:search]).order("id desc").paginate(params[:page], :limit => params[:limit], :search_count => params[:search])
+    @notes = Note.search(params[:search]).paginate(params[:page], :limit => params[:limit], :search_count => params[:search])
     respond_with(@notes) do |format|
       format.html { @notes = @notes.includes(:creator) }
       format.xml do