fixes exception when sending email about comment reply

app/models/poll.rb

@@ -27,6 +27,10 @@ class Poll < ActiveRecord::Base
 
   scope :sort_for_list, -> { order(:geozone_restricted, :starts_at, :name) }
 
+  def title
+    name
+  end
+
   def current?(timestamp = Date.current.beginning_of_day)
     starts_at <= timestamp && timestamp <= ends_at
   end