Change links for proposals lists

Changed applied:

- Remove Archived proposals from tab and add a link under Proposals
  lists
- Remove Popular proposals link from custom section and add it to the
  Proposals lists
- Remove Retired proposals link from custom section and add it to the
  Proposals lists
- Remove Selected proposals link from custom section and add it to the
  Proposals lists

app/controllers/proposals_controller.rb

@@ -53,6 +53,7 @@ class ProposalsController < ApplicationController
     load_retired
     load_selected
     load_featured
+    remove_archived_from_order_links
   end
 
   def vote
@@ -156,6 +157,10 @@ class ProposalsController < ApplicationController
       end
     end
 
+    def remove_archived_from_order_links
+      @valid_orders.delete("archival_date")
+    end
+
     def set_view
       @view = (params[:view] == "minimal") ? "minimal" : "default"
     end