made flash messages for conversations translatable

app/controllers/conversation_visibilities_controller.rb

@@ -11,7 +11,7 @@ class ConversationVisibilitiesController < ApplicationController
                                         :conversation_id => params[:conversation_id]).first
     if @vis
       if @vis.destroy
-        flash[:notice] = "Conversation successfully removed"
+        flash[:notice] = I18n.t('conversations.destroy.success')
       end
     end
     redirect_to conversations_path

app/controllers/conversations_controller.rb

@@ -32,7 +32,7 @@ class ConversationsController < ApplicationController
     if @conversation = Conversation.create(params[:conversation])
       Postzord::Dispatch.new(current_user, @conversation).post
 
-      flash[:notice] = "Message sent"
+      flash[:notice] = I18n.t('conversations.create.sent')
       if params[:profile]
         redirect_to person_path(params[:profile])
       else

config/locales/diaspora/en.yml

@@ -200,6 +200,10 @@ en:
         few: "%{count} new messages"
         many: "%{count} new messages"
         other: "%{count} new messages"
+    create:
+      sent: "Message sent"
+    destroy:
+      success: "Conversation successfully removed"
 
   date:
     formats: