put add admin pages using orbit back end controller

app/views/admin/purchases/index.html.erb

@@ -1,3 +1,7 @@
+<% content_for :side_bar do %>
+	<%= render :partial => 'layouts/side_bar', :locals => {:link_name => t('site.settings'), :link_url => admin_site_site_info_path(@site), :side_bar_content => 'admin/sites/side_bar'} %>
+<% end %>
+
 <div class="main2">
 	<h1 class="list_title"><%= t('list.purchase') %></h1>
 	<table class="table main-list">