translate confirmation of sending the message

app/controllers/messages_controller.rb

@@ -39,8 +39,7 @@ class MessagesController < ApplicationController
     @messages = @user.undeleted_received_messages
 
     if @new_message.save
-      flash[:success] = "Your message has been sent to " <<
-        @new_message.recipient.username.to_s << "."
+      flash[:success] = I18n.t 'controllers.messages_controller.flashmsgsentto', :user => "#{@new_message.recipient.username.to_s}"
       return redirect_to "/messages"
     else
       render :action => "index"

config/locales/en.yml

@@ -368,6 +368,7 @@ en:
       flashdelmsg: "Deleted %{nbmsg} message%{plural}."
       pluralmsg: "s"
       flashcannotfindmsg: "Could not find message."
+      flashmsgsentto: "Your message has been sent to %{user}."
     search_controller:
       searchtitle: "Search"
     stories_controller:

config/locales/fr.yml

@@ -381,6 +381,7 @@ fr:
       flashdelmsg: "%{nbmsg} message%{plural} supprimé%{plural}."
       pluralmsg: "s"
       flashcannotfindmsg: "Message non trouvé."
+      flashmsgsentto: "Votre message a été envoyé à %{user}."
     search_controller:
       searchtitle: "Rechercher"
     stories_controller: