Issues deploying extensions with modwsgi

[rgrp]

Some extensions import pylons features (such as request) at root.

Have encountered following issues:

1. You need to import ckanext before any ckan stuff in your wsgi script

2. Running under wsgi daemon mode (normal mode is fine!) the front page (front page only) will not work. You get errors like this in the log:

[Mon Jan 17 09:01:19 2011] [error] Exception KeyError: KeyError(-1218594160,) in <module 'threading' from '/usr/lib/python2.6/threading.pyc'> ignored
[Mon Jan 17 09:01:20 2011] [error] Exception AttributeError: "'NoneType' object has no attribute 'clearing'" in <bound method PluginEnvironment.__del__ of  Services for Environment '<default>'