Add calculate_winners on Admin Budget controller, route and ability for admins

app/models/abilities/administrator.rb

@@ -44,7 +44,7 @@ module Abilities
 
       can [:read, :update, :valuate, :destroy, :summary], SpendingProposal
 
-      can [:index, :read, :new, :create, :update, :destroy], Budget
+      can [:index, :read, :new, :create, :update, :destroy, :calculate_winners], Budget
       can [:read, :create, :update, :destroy], Budget::Group
       can [:read, :create, :update, :destroy], Budget::Heading
       can [:hide, :update, :toggle_selection], Budget::Investment

app/models/budget.rb

@@ -67,8 +67,12 @@ class Budget < ActiveRecord::Base
     phase == "finished"
   end
 
+  def balloting_process?
+    balloting? || reviewing_ballots?
+  end
+
   def balloting_or_later?
-    balloting? || reviewing_ballots? || finished?
+    balloting_process? || finished?
   end
 
   def on_hold?

app/models/budget/result.rb

@@ -12,11 +12,10 @@ class Budget
       reset_winners
       investments.each do |investment|
         @current_investment = investment
-        if inside_budget?
-          set_winner
-        end
+        set_winner if inside_budget?
       end
     end
+    handle_asynchronously :calculate_winners
 
     def investments
       heading.investments.selected.sort_by_ballots
@@ -52,4 +51,4 @@ class Budget
     end
 
   end
-end
+end