wip/py-webapp2 2.5.2 NetBSD

`webapp2`_ is a lightweight Python web framework compatible with Google App Engine's `webapp`_.

webapp2 is `simple`_. it follows the simplicity of webapp, but improves it in some ways: it adds better URI routing and exception handling, a full featured response object and a more flexible dispatching mechanism.

webapp2 also offers the package `webapp2_extras`_ with several optional utilities: sessions, localization, internationalization, domain and subdomain routing, secure cookies and others.

webapp2 can also be used outside of Google App Engine, independently of the App Engine SDK