Extract concern to handle investments filters

We were defining the same filters in three different controllers. We
were also adding a method in the ApplicationController which only made
sense in the same three controllers.

app/controllers/application_controller.rb

@@ -111,14 +111,6 @@ class ApplicationController < ActionController::Base
       end
     end
 
-    def set_default_budget_filter
-      if @budget&.balloting? || @budget&.publishing_prices?
-        params[:filter] ||= "selected"
-      elsif @budget&.finished?
-        params[:filter] ||= "winners"
-      end
-    end
-
     def current_budget
       Budget.current
     end