Channel doesn't exist should raise 404 not 500

[timc3]

I am getting 500 errors when trying to check for channels, instead of 404:

2010-11-10 16:37:58,524 - HookboxRest - WARNING - REST Error: /get_channel_info
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/hookbox-0.3.4dev-py2.6.egg/hookbox/api/web.py", line 29, in call
return handler(form, start_response)
File "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/hookbox-0.3.4dev-py2.6.egg/hookbox/api/web.py", line 172, in render_get_channel_info
info = self.api.get_channel_info(channel_name)
File "/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/hookbox-0.3.4dev-py2.6.egg/hookbox/api/internal.py", line 95, in get_channel_info
raise ExpectedException("Channel %s doesn't exists" % (channel_name,))
ExpectedException: Channel /my/channnnnel doesn't exists

Not exactly RESTful if it doesn't respond with the correct status codes.