Refactor: extract ProjectsController#activity to a new Activities controller.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@4047 e93f8b46-1217-0410-a6f0-8f06a7374b81

config/routes.rb

@@ -187,7 +187,7 @@ ActionController::Routing::Routes.draw do |map|
       project_views.connect 'projects/:project_id/issues/:copy_from/copy', :controller => 'issues', :action => 'new'
     end
 
-    projects.with_options :action => 'activity', :conditions => {:method => :get} do |activity|
+    projects.with_options :controller => 'activities', :action => 'index', :conditions => {:method => :get} do |activity|
       activity.connect 'projects/:id/activity'
       activity.connect 'projects/:id/activity.:format'
       activity.connect 'activity', :id => nil