add desc and link to xls and csv exporters

app/models/map.rb

@@ -84,12 +84,14 @@ class Map < ActiveRecord::Base
 
   def to_csv(options = {})
     CSV.generate(options) do |csv|
-      csv << ["id", "name", "metacode", "user.name", "permission", "synapses"]
+      csv << ["id", "name", "metacode", "desc", "link", "user.name", "permission", "synapses"]
       self.topics.each do |topic|
         csv << [
           topic.id,
           topic.name,
           topic.metacode.name,
+          topic.desc,
+          topic.link,
           topic.user.name,
           topic.permission,
           topic.synapses_csv("text")

app/views/maps/show.xls.erb

@@ -3,6 +3,8 @@
     <th>ID</th>
     <th>Name</th>
     <th>Metacode</th>
+    <th>Description</th>
+    <th>Link</th>
     <th>Username</th>
     <th>Permission</th>
     <th>Synapses</th>
@@ -12,6 +14,8 @@
     <td><%= topic.id %></td>
     <td><%= topic.name %></td>
     <td><%= topic.metacode.name %></td>
+    <td><%= topic.desc %></td>
+    <td><%= topic.link %></td>
     <td><%= topic.user.name %></td>
     <td><%= topic.permission %></td>
     <% topic.synapses_csv.each do |s_text| %>