Replaces the obsolete robots.txt with a cached action (#2491).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@2319 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/controllers/welcome_controller.rb

@@ -16,9 +16,15 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
 class WelcomeController < ApplicationController
+  caches_action :robots
 
   def index
     @news = News.latest User.current
     @projects = Project.latest User.current
   end
+  
+  def robots
+    @projects = Project.public.active
+    render :layout => false, :content_type => 'text/plain'
+  end
 end