Prevent warning on undefined salt variable.

Crash in create_list_request when list name is missing #490

Additional changes for #492

Add token to prevent CSRF.

(This probably makes responses a bit slower.)

Updating source texts according to fixes on en_US catalog

Fix shared docs zip upload to send multiple files at once

Broken `custom_attribute` field in `member.dump`

Fix missing quotes in init script

Datasource: On LDAP 2 level query, attr1 as DN should not be canonicalized

On Debian 9, with perl 5.24.1 and Archive::Zip 1.59 and 1.64, uploading
a zip file to let Sympa (6.2.34) unzip it and put its files into shared
docs fails.
The zip member is a CGI::File::Temp instance and can seek but fails to
be extracted ("Unable to extract member XXX of the zip file" in Sympa
logs).
Unconditionnally blessing the file handle to IO::File fixes the failure.

https://github.com/sympa-community/sympa/issues/72 states that "we
should stop supporting init scripts as modern distributions are using
systemd". I have to disagree. Gentoo Linux defaults to OpenRC, so I
created a small pull request to fix missing quotes in the init script.

Issue #309 on 6.2.36

Add feature 'copy_list' in sympa.pl

Fix #323 — Add "Report abuse" button to lists side menu

Datasource: On LDAP 2 level query, if attr1 is (partial or entire) DN for suffix2, it should not be canonicalized.
Because some LDAP servers e.g. Active Directory don't conform to standard on matching rule and canonicalization might hurt integrity of DNs under the same DIT.  See also GH issue #474.

I forget the type of the parameter

WWSympa: Suppress verbose log on cookie