Fix queries and scopes after column deletion

Some queries were accessing original column instead of the new
translatable one. This should have been causing unexpected behavior
for requests maded in a different locale than the application default.

app/controllers/admin/poll/polls_controller.rb

@@ -67,6 +67,7 @@ class Admin::Poll::PollsController < Admin::Poll::BaseController
     end
 
     def poll_params
+      image_attributes = [:id, :title, :attachment, :cached_attachment, :user_id, :_destroy]
       attributes = [:name, :starts_at, :ends_at, :geozone_restricted, :results_enabled,
                     :stats_enabled, :budget_id, geozone_ids: [],
                     image_attributes: image_attributes]

app/controllers/budgets/executions_controller.rb

@@ -19,7 +19,7 @@ module Budgets
                   .group_by(&:heading)
         else
           @budget.investments.winners
-                  .joins(:milestones).includes(:milestones)
+                  .joins(milestones: :translations)
                   .distinct.group_by(&:heading)
         end
       end

app/controllers/polls_controller.rb

@@ -11,7 +11,7 @@ class PollsController < ApplicationController
   ::Poll::Answer # trigger autoload
 
   def index
-    @polls = @polls.not_budget.send(@current_filter).includes(:geozones).sort_for_list.page(params[:page])
+    @polls = @polls.not_budget.send(@current_filter).sort_for_list.page(params[:page])
   end
 
   def show

app/models/budget/investment.rb

@@ -368,7 +368,7 @@ class Budget
     end
 
     def self.with_milestone_status_id(status_id)
-      joins(:milestones).includes(:milestones).select do |investment|
+      includes(milestones: :translations).select do |investment|
         investment.milestone_status_id == status_id.to_i
       end
     end

app/models/poll.rb

@@ -37,7 +37,7 @@ class Poll < ActiveRecord::Base
   scope :public_for_api, -> { all }
   scope :not_budget,    -> { where(budget_id: nil) }
 
-  scope :sort_for_list, -> { order(:geozone_restricted, :starts_at, :name) }
+  scope :sort_for_list, -> { joins(:translations).order(:geozone_restricted, :starts_at, "poll_translations.name") }
 
   def title
     name

app/models/poll/booth.rb

@@ -12,7 +12,7 @@ class Poll
     end
 
     def self.available
-      where(polls: { id: Poll.current_or_recounting }).includes(:polls)
+      where(polls: { id: Poll.current_or_recounting }).joins(polls: :translations)
     end
 
     def assignment_on_poll(poll)