rails3: upgrade routes
rails3: sent_on is not used
rails3: now it is rails/test_helper
rails3: application.rb added
rails3: move filter parameters to application.rb
rails3: block erb helpers use '<%=' instead of '<%'
rails3: use scope instead of named_scope
rails3: unobtrusive javascript ajax
rails3: new action mailer api
rails3: session store is now in application.rb
rails3: upgrade ruby and rails
rails3: delete/update configs
rails3: delete incompatible plugins
rails3: fix incompatible configs
rails3: remove incompatible gems
rails3: scrooge is not compatible
rails3: update sphinx config
rails3: fix yml arrays