Revert "Rewrites xnetevents subscription page."

This reverts commit a624ad230e565adfc3edde098b802cabc8f31880.

Administration links don't work on the production website
Revert "Rewrites xnetevents index page."

This reverts commit 607115209690960e2954517822a2862dc33d1c90.
Revert the last two commits

There has been a strange transient bug which is now fixed (don't know how)

This reverts commit 2d394628dc35b7da99a73128df15ad980e69197c and
6c615821baef0daad2d1d8d7ef988be146da58e3.
Fix archive events.
Remove debugging echo in xnetevents module
Fix organizer display for events created by xnet accounts.
Fix platal.cron

Commit c0c966f5 broke the cron file:

cron[18983]: Error: bad hour; while reading /etc/cron.d/platal
/usr/sbin/cron[18983]: (*system*platal) ERROR (Syntax error, this crontab file will be ignored)
Fix community letter "From" header
Fix owner deletion on MLs.
Fix short_name handling in xnetevent subscription url.
Prevent the bestmail cron to send a mail with only "Done."
Fix 'reversed' field handling for AX newsletter.
Fix xnetevent subscription.
Revert "Force-normalize user emails for list unsubscribe."

This reverts commit 84d77e72a59ce20615794ad9154e71339014da84 but keeps bug fix
from commit b32a94b8b784a4ab4d4d2af47974b6ab0659a78f.

Some external subscribers don't have an user account and hence needs to be
able to unsubscribe to mailing list using their email address only.

[Security]
Env::v('del_member') is directly transmitted (through RPC) as the "user" param
of "mlist.ApprovedDeleteMember(user)" (bin/lists.rpc.py function mass_unsubscribe line 491).
Hence it relies on mailman to correctly handle this user-controlled input.
This is why the content of "del_member" is not checked to be ASCII-only nor
escaped. Mailman is supposed to take this value "as is".

Conflicts:
	modules/lists.php
Fix profile view when not logged in.
Handle canceled payment transactions.
Force auth on newsletter unsubscription link