[SAC] [OSGeo] #1671: [trac] Port notify.py local modification to newer version

[OSGeo]

#1671: [trac] Port notify.py local modification to newer version
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 Reporter:  strk           |       Owner:  sac@…
     Type:  task           |      Status:  new
 Priority:  normal         |   Milestone:
Component:  Systems Admin  |  Resolution:
 Keywords:  trac           |
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Comment (by strk):

 I wonder if it's been myself wiping out the session attributes while
 fighting spammers. Cannot exclude that (but I guess I could look at the
 backups to verify). The other possibility is that session attributes are
 removed when they do not have a match in the session itself (which is more
 likely that I could have removed, thinking it would hold no important
 info). I'll try the latter.

 In any case, it doesn't seem nice to require entering preferences in each
 and every instance.
 We're the same community here, using a single sign-on, so we should really
 aim at making this automatic. Besides, judging from the actual values in
 those attribute tables, chances are spammers are using notifications as a
 way to spam arbitrary email addresses, by writing them into the session
 preference.

 For configuration, see https://trac.edgewall.org/wiki/TracNotification
 (but please dont' configure your instances independently, we want to use
 the global config as much as possible).

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Ticket URL: <https://trac.osgeo.org/osgeo/ticket/1671#comment:11>
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