Fix these bugs:

1.結構部份
    a.原選單，點選編輯，無動作反應
    b.新增選單後，左邊灰色架構部份不會更新

  2.檔案室
    a.無法編輯分類

app/controllers/admin/links_controller.rb

@@ -1,10 +1,4 @@
-class Admin::LinksController < ApplicationController
-
-  layout "site_editor"
-  
-  before_filter :authenticate_user!
-  before_filter :find_parent_item
-  before_filter :is_admin?
+class Admin::LinksController < Admin::ItemsController
   
   def show
     @item ||= Link.find(params[:id])

app/controllers/admin/pages_controller.rb

@@ -1,11 +1,4 @@
-class Admin::PagesController < ApplicationController
-
-  layout "site_editor"
-  
-  before_filter :authenticate_user!
-  before_filter :find_parent_item
-  before_filter :is_admin?
-  before_filter :set_current_item
+class Admin::PagesController < Admin::ItemsController
   
   def show
     @item = Page.find(params[:id])
@@ -40,7 +33,7 @@ class Admin::PagesController < ApplicationController
 	
 	  @frontend_path = @item.app_frontend_url ? @item.app_frontend_url : @module_app.widgets.keys[0]
 	  
-	  if @module_app.widgets.any?{|b| b.class == Array}
+	  if @module_app && @module_app.widgets && @module_app.widgets.any?{|b| b.class == Array}
         @frontend_style =  @module_app.widgets[@frontend_path] if !@frontend_path.blank? && !@module_app.widgets.blank?
 	  end
 	  

app/views/admin/pages/_edit.html.erb

@@ -1,4 +1,4 @@
-<%= flash_messages %>
+<%#= flash_messages %>
 <div id="poststuff">
 	<h1><%= t('editing.page') %></h1>
 	<%= form_for @item, :url => admin_page_path(@item), :html => { :class => 'form-horizontal edit_page' }  do |f| %>

app/views/admin/pages/_new.html.erb

@@ -1,4 +1,4 @@
-<%= flash_messages %>
+<%#= flash_messages %>
 <div id="poststuff">
 	<h1><%= t('new.page') %></h1>
 	<%= form_for @item, :url => admin_pages_path, :html => { :class => 'form-horizontal edit_page' }  do |f| %>

app/views/admin/pages/_show.html.erb

@@ -1,4 +1,4 @@
-<%= flash_messages %>
+<%#= flash_messages %>
 
 
 <%= page_stylesheets(@item, true).html_safe %> 

app/views/admin/pages/create.js.erb

@@ -1,3 +1,3 @@
-$('#back_sidebar').html("<%= escape_javascript(render(:partial => 'admin/items/site_map_left_bar')) %>");
 $('#back_main').html("<%= escape_javascript(render(:partial => 'admin/pages/show')) %>");
+$('#back_sidebar').html("<%= escape_javascript(render(:partial => 'admin/items/site_map_left_bar')) %>");
 history.pushState(null, document.title, "<%= escape_javascript(admin_page_url(@item)) %>");

app/views/admin/pages/update.js.erb

@@ -1,2 +1,3 @@
 $('#back_main').html("<%= escape_javascript(render(:partial => 'admin/pages/show')) %>");
+$('#back_sidebar').html("<%= escape_javascript(render(:partial => 'admin/items/site_map_left_bar')) %>");
 history.pushState(null, document.title, "<%= escape_javascript(admin_page_url(@item)) %>");