added authentication function using D2::Plugin::Auth::Extensible; new admin function to register new user; removed GET /login route - using auto_page()
switched model & app validation classes - DFV currently more suitable for model than HTML::FormHandler: eg manipulating validation profile required fields in model instead of template
queries to retrieve test results & result summaries from db; new route class for ajax calls; formatted report_form.tt; provided some tt vars via before_template_render hook
