#176

AbstractStepHelper / StepHelper / StepHelperDelegate
- added final step flag
- getting last step

AbstractWizardProcessor:
- validation algorithm improved
- using WizardDataBinder instead of WebDataBinder

WizardDataBinder:
- aware of required/allowed fields already being set
- if so, updating instead of replacing
#176

 - retrieving scoped data improved
 - was failing because given scope might not have a property described via key, therefore it was needed to check this first
#176

NewCarWizardProcessor [server, client]
- removed setting of manufacturedIn (should be handled via remote step)
- fixed client side, was missing to send form data due to invalid variable was used
fixes #183

- completely removed webflow functionality (left only binding subpackage because it is still being used)
- removed application classes (wizards, view, tags etc.)