Step 4: add task forms to the process application

In this step we add embedded task forms to the
process application. We use them for the start
event and the user task.

See:
http://camunda.org/get-started/developing-process-applications.html#tutorial-add-task-forms
Step 5: add a service task to the process application

In this step we add a service task to the process and
implement it as a JavaDelegate.

See:
http://camunda.org/get-started/developing-process-applications.html#tutorial-add-a-service-task