migrate edit update and destroy to jQuery and refactor it

test for changing state is wip, forgot to mark it with @wip

features/step_definitions/project_steps.rb

@@ -42,12 +42,14 @@ end
 
 When /^I edit the project name to "([^\"]*)"$/ do |new_title|
   click_link "link_edit_project_#{@project.id}"
+
+  # no need to wait for the form because the AJAX loading should not be async!
   fill_in "project[name]", :with => new_title
 
   # changed to make sure selenium waits until the saving has a result either
   # positive or negative. Was: :element=>"flash", :text=>"Project saved"
   # we may need to change it back if you really need a positive outcome, i.e.
-  # this step needs to fail if the project was not saved succesfully
+  # this step needs to fail if the project was not saved successfully
   selenium.click "submit_project_#{@project.id}",
     :wait_for => :text,
     :text => /(Project saved|1 error prohibited this project from being saved)/