Configuration and implementation to allow the users to request the
deletion of their account if they don't accept the disclaimer or in
their settings under the disclaimers.

Add a second configurable organisation where the user lands after
self-registration

email change

make change in upgrader (12.x admin become administrator, sysadmin adn
roles manager, 12.x user manager become user managers and roles
managers)

OO-3295,OO-3538: replace Jersey with Apache CXF (JAX-RS 2.1, Spring integration), remove the JAX-WS stack from Sun, update support for OpenMeetings (patch S. Clemenz)

OO-3489, OO-3490, OO-3491, OO-3495, OO-3499, OO-3500, OO-3501: finish the export process, delete files after zipping, send email... and more exported data

OO-3489, OO-3492, OO-3493, OO-3494, OO-3496, OO-3497: infrastructure to export user data, export  portraits, notes, personal folder, calendars, subscriptions, delete calendars after usser deletion

OO-3477 remove username/email pseudo delete, refactor userdeletemanager to use more the userdatadeletable interface, remove all data from already deleted users