added link to changelog, updated notifications

app/helpers/notifications_helper.rb

@@ -8,7 +8,7 @@ module NotificationsHelper
     when 'new_request'
       translation
     when 'comment_on_post'
-      link_to translation, object_path(Comment.first(:id => object_id).post)
+      link_to translation, object_path(Comment.first(:id => note.object_id).post)
     else
     end
   end

app/views/layouts/application.html.haml

@@ -92,6 +92,7 @@
           %li= link_to 'github', "https://github.com/diaspora/diaspora"
           %li= link_to t('layouts.header.blog'), "http://blog.joindiaspora.com"
           %li= link_to t('layouts.header.code'), "#{root_url}source.tar.gz"
+          %li= link_to t('.whats_new'), 'https://github.com/diaspora/diaspora/wiki/Changelog'
 
     -if !@landing_page && request.url.match(/joindiaspora.com/)
       :javascript

config/locales/diaspora/en.yml

@@ -83,6 +83,7 @@ en:
         code: "code"
       application:
         powered_by: "POWERED BY DIASPORA*"
+        whats_new: "what's new?"
   shared:
       publisher:
           posting: "Posting..."