remove the uns thing, implement something custom

git-svn-id: https://svn.eionet.europa.eu/repositories/Python/flis.live_catalogue@255 60810c31-268d-49e0-9aa7-0fbff4fae3ae
LDAP object for getting user email and full name.
Notification signals for sending mails.

git-svn-id: https://svn.eionet.europa.eu/repositories/Python/flis.live_catalogue@256 60810c31-268d-49e0-9aa7-0fbff4fae3ae
test notifications for adding and editing catalogue entries

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from and subject for notifications

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subscribe/unsubscribe with tests

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unsubscribe link from notification email