default sort order to created_at instead of commented_on on desktop site

app/controllers/aspects_controller.rb

@@ -142,7 +142,7 @@ class AspectsController < ApplicationController
     if params[:sort_order].present?
       session[:sort_order] = (params[:sort_order] == 'created_at') ? 'created_at' : 'updated_at'
     elsif session[:sort_order].blank?
-      session[:sort_order] = 'updated_at'
+      session[:sort_order] = 'created_at'
     else
       session[:sort_order] = (session[:sort_order] == 'created_at') ? 'created_at' : 'updated_at'
     end

app/views/aspects/_aspect_stream.haml

@@ -6,9 +6,9 @@
   #sort_by
     = t('.recently')
     %span.controls
-      = link_to_if(session[:sort_order] == 'created_at', t('.commented_on'), aspects_path(:a_ids => stream.aspect_ids, :sort_order => 'updated_at'))
-      ·
       = link_to_if(session[:sort_order] == 'updated_at', t('.posted'), aspects_path(:a_ids => stream.aspect_ids, :sort_order => 'created_at' ))
+      ·
+      = link_to_if(session[:sort_order] == 'created_at', t('.commented_on'), aspects_path(:a_ids => stream.aspect_ids, :sort_order => 'updated_at'))
 
   %h3
     - if stream.for_all_aspects?