Quick port of morepath to webob.
Use webob BaseRequest, not Request with magic attr stuff.
Remove all uses of werkzeug. Port tests to use webobtoolkit.client,
which is similar to werkzeug testing Client, and otherwise to use
webob.

replace werkzeug built in server with wsgiref server for test runs.

unfortunately have to port some basic auth stuff from Pyramid due to
missing functionality in webob.
serve -> server typo fix.
Say something about where server is.
A bit more clear about what server is.
Change message a bit.
Fix a bunch of intersphinx references.