small fix for delete sites

app/helpers/tickets_helper.rb

@@ -1,7 +1,9 @@
 module TicketsHelper
 	def smart_links_parser(html,site)
+		if !site.nil?
 			html = html.gsub("href=\"/uploads/","href=\"http://#{site.site_domain}/uploads/")
 			html = html.gsub("src=\"/uploads/","src=\"http://#{site.site_domain}/uploads/")
+		end
 		return html
 	end
 

app/views/admin/tickets/_ticket.html.erb

@@ -13,10 +13,12 @@
   <a class="ticket-link" href="<%= admin_ticket_path(ticket.id) %>">
     <span class="ticket-title"><%= ticket.subject %></span>
   </a>
+  <% if !ticket.registered_site.nil? %>
     <a class="ticket-site-link" href="http://<%= ticket.registered_site.site_domain %>" target="_blank">
       <i class="fa fa-external-link"></i>
       <%= ticket.registered_site.title %>
     </a>
+  <% end %>
 	<div class="ticket-label pull-right">
   <% if ticket.is_urgent? %>
     <span class="label label-danger">

app/views/admin/tickets/_ticket_by_c.html.erb

@@ -9,7 +9,12 @@
 %>
 <tr>
   <td><%= ticket_by_c.uid %></td>
-  <td><a href="http://<%= ticket_by_c.registered_site.site_domain %>" target="_blank"><%= ticket_by_c.registered_site.title %></a></td>
+  <td>
+    <% if !ticket_by_c.registered_site.nil? %>
+      <a href="http://<%= ticket_by_c.registered_site.site_domain %>" target="_blank"><%= ticket_by_c.registered_site.title %></a>
+    <% end %>
+    &nbsp;
+  </td>
   <td class="span6">
     <a href="/admin/tickets/<%= ticket_by_c.id.to_s %>"><%= ticket_by_c.subject %></a>
   </td>

app/views/admin/tickets/show.html.erb

@@ -24,6 +24,7 @@
       <i class="ticket-home-btn-icon fa fa-home"></i>
       Back to Dashboard
     </a>
+    <% if !@ticket.registered_site.nil?
       <a href="http://<%= @ticket.registered_site.site_domain %>" target="_blank" class="btn btn-normal">
         <i class="ticket-external-link-icon fa fa-external-link"></i>
           <%= @ticket.registered_site.title %>
@@ -32,6 +33,7 @@
         <i class="ticket-external-link-icon fa fa-search"></i>
           Search tickets from <b><i><%= @ticket.registered_site.title %></i></b>
       </a>
+    <% end %>
   </div>
   <div class="ticket-wrap">
     <div class="ticket-header">