Fix to event REST add

- upgrade script broke adding events via the rest interface if they had an xml_version included

- fixed, also, add now more flexible with directly adding events from an export encapsulated in a response tag
Very large PGP keys would prevent users from logging in - fixes #142

- removed the PGP key from the Auth user

- PGP key of currently logged in user is looked up on demand and not stored in the session
GPGKey not showing up for admin/users/view

- incorrect conditional fixed
Merge branch 'hotfix-2.2.20'