We have so many users now that loading these forms take forever.
Instead, implement a textbox with autocomplete using django-selectable,
which will not load the whole list of users at once.
Notices entered will be sent to the organisations email address - so there
needs to be one (if not, the notification field doesn't show up).
Notifications also go in the database, and show up on each object so you
can see the previous history of it, and get emailed to the slaves list.
Finally, it's possible to reject-with-notification, in which case the
notification is sent off to the user and after that the object is deleted.
The notification history stays in the database, but is not linked anywhere
(but can be viewed from the admin interface on that model directly).
Unfortunately, this seems to cause double notifications to the slaves list,
but we'll have to live with that for now.
Closes#137
"submitter", thus making it possible for a single person to manage
multiple organisations, as well as for a single organisation to have
multiple different manages.
Re-hook events and news items to use organisation of the submitter
instead of the user who did the submission. (product listings already
did this)
part of the core, since it seems like it could be useful for other
kinds of objects as well in the future, but for now only the
software catalogue uses it.
