New UI : Use RemoteDownloader class to hide ovh url

app/models/commentaire.rb

@@ -17,6 +17,14 @@ class Commentaire < ActiveRecord::Base
     "#{email}, " + I18n.l(created_at.localtime, format: '%d %b %Y %H:%M')
   end
 
+  def file_url
+    if Features.remote_storage
+      RemoteDownloader.new(file.path).url
+    else
+      file.url
+    end
+  end
+
   private
 
   def notify

app/views/new_gestionnaire/dossiers/messagerie.html.haml

@@ -19,7 +19,7 @@
 
           - if commentaire.file.present?
             .attachment-link
-              = link_to commentaire.file.url, class: "button", target: "_blank", title: "Télécharger" do
+              = link_to commentaire.file_url, class: "button", target: "_blank", title: "Télécharger" do
                 .icon.attachment
                 = commentaire.file_identifier
           - elsif commentaire.piece_justificative