FogBugz #132: Redirect user to /contacts when she is already signed in.

app/controllers/welcome_controller.rb

@@ -1,3 +1,9 @@
 # -*- coding: utf-8; -*-
 class WelcomeController < ApplicationController
+  def index
+    # Ask Devise whether or not the user is already signed in.
+    if user_signed_in? then
+      redirect_to contacts_path
+    end
+  end
 end