NotificationList has a bogus __getitem__

In notification.py, we define a NotificationList class with an dodgy
__getitem__, in order to make things nice and usable from TALES. There are
better ways and this should be fixed.

>>It's rather odd to have __getitem__ return a list of items (sometimes)
>>>>while __iter__ generates items.
>
>>
>>
>> Indeed. It seemed the best way to expose this to TALES though. I didn't want
>> to dictate how the final rendering would look, so it could render the
>> notifications in order they are added, or group them by level,

Maybe an ITraversable adapter is the best place for this TALES support?

Or, make this class directly implement ITraversable.

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Stuart Bishop <email address hidden> http://www.canonical.com/
Canonical Ltd. http://www.ubuntu.com/

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