Changes comletter css to green.
Add mailing list headers to newsletters
Rewrite xnetevents and removes anim notification when the subscription is not changed.
Corrects xorg_id.
Revert "Rewrite xnetevents and removes anim notification when the subscription is not changed."

This reverts commit aa3ef74f4477984d6f5771b1baa0c9c7cbe2b6ea.
Grey submit button on send mail page after click.
Merge branch 'xorg/maint'

Conflicts:
	include/newsletter.inc.php
Change comletter from and replyto and add Return-Path header
Add a dissuasive message in the "send a mail to a group" page
Add documentation text near the edit area of the newsletter header
Update ChangeLog.

Signed-off-by: Victor Berger <victor.berger@m4x.org>
Unsubscribes user from groupNL when unsubscribing from group.
Improve ergonomy of the AX ID field on the profile page
Add a comment to explain why VIEW_HIDDEN was not introduced in profile/ pages
Add a SIREN field to profile_jobs_enum.
Fix HTTP redirect when changing rights on polytechnique.net and Referer header is filtered
Add a permanent warning message in admin/account/types to explain what directory_ax is
Rewrites xnetevents index page.
Rewrites xnetevents subscription page.
Add "directory_hidden" permission to account types